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  Animalia
      Arthropoda
            Insecta
                    Hymenoptera
                      Apocrita
                        Aculeata
                          Apoidea
                                 [Sphecoidea]
                            Apidae
                                     Allodape
                                             Allodape australissima
                                             Allodape brachycephala
                                             Allodape ceratinoides
                                             Allodape chapini
                                             Allodape collaris
                                             Allodape exoloma
                                             Allodape friesei
                                             Allodape interrupta
                                             Allodape laeviceps
                                             Allodape mucronata
                                             Allodape panurgoides
                                             Allodape pictifrons
                                             Allodape punctata
                                             Allodape quadrilineata
                                             Allodape skaifeorum
                                     Allodapula
                                             Allodapula acutigera
                                             Allodapula melanopus
                                             Allodapula mindanoanis
                                               Allodapula mindanoanis ssp. boharti
                                             Allodapula variegata
                                     Amegilla
                                             Amegilla acraensis
                                             Amegilla aerizusa
                                             Amegilla aeruginosa
                                             Amegilla africana
                                             Amegilla albigena
                                             Amegilla albocaudata
                                             Amegilla antimena
                                             Amegilla asserta
                                             Amegilla atrocincta
                                             Amegilla buruensis
                                             Amegilla caelestina
                                             Amegilla calceifera
                                             Amegilla calens
                                             Amegilla capensis
                                             Amegilla chlorocyanea
                                             Amegilla cincta
                                             Amegilla cingulifera
                                             Amegilla circulata
                                             Amegilla confusa
                                             Amegilla dizona
                                             Amegilla dulcifera
                                             Amegilla elegans
                                             Amegilla fallax
                                             Amegilla fimbriata
                                             Amegilla garrula
                                             Amegilla godofredi
                                             Amegilla griseotecta
                                             Amegilla himalajensis
                                             Amegilla korotonensis
                                             Amegilla langi
                                             Amegilla medicorum
                                             Amegilla mimadvena
                                             Amegilla nigritarsis
                                             Amegilla niveata
                                             Amegilla nubica
                                             Amegilla obscuriceps
                                             Amegilla penicula
                                             Amegilla puttalama
                                             Amegilla quadrifasciata
                                             Amegilla salviae
                                                   [Anthophora salviae]
                                             Amegilla sapiens
                                             Amegilla spilostoma
                                             Amegilla terminata
                                             Amegilla urens
                                             Amegilla velocissima
                                             Amegilla velutina
                                             Amegilla violacea
                                             Amegilla whiteheadi
                                             Amegilla zonata
                                     Ancylosceles
                                             Ancylosceles melanostoma
                                     Anthophora
                                             Anthophora abroniae
                                             Anthophora abrupta
                                             Anthophora abruptella
                                             Anthophora aestivalis
                                             Anthophora affabilis
                                             Anthophora agama
                                             Anthophora albata
                                                   [Anthophora flexipes]
                                             Anthophora alluaudi
                                             Anthophora anstrutheri
                                             Anthophora arequipensis
                                             Anthophora armata
                                             Anthophora arthuri
                                             Anthophora aterrima
                                             Anthophora atriceps
                                             Anthophora basalis
                                             Anthophora belieri
                                             Anthophora bimaculata
                                             Anthophora bomboides
                                             Anthophora braunsiana
                                             Anthophora calcarata
                                             Anthophora californica
                                               Anthophora californica ssp. erysimi
                                             Anthophora canescens
                                                   [Anthophora subterranea]
                                             Anthophora capistrata
                                             Anthophora catalinae
                                               Anthophora catalinae ssp. clementina
                                             Anthophora centriformis
                                             Anthophora cockerelli
                                             Anthophora columbariae
                                             Anthophora coptognatha
                                             Anthophora crotchii
                                             Anthophora curta
                                               Anthophora curta ssp. ensenadensis
                                               Anthophora curta ssp. melanops
                                               Anthophora curta ssp. petrophila
                                             Anthophora dammersi
                                             Anthophora dispar
                                             Anthophora dulcifera
                                             Anthophora edwardsii
                                             Anthophora erythrothorax
                                             Anthophora estebana
                                             Anthophora euops
                                             Anthophora exigua
                                             Anthophora femorata
                                             Anthophora ferruginea
                                             Anthophora flavocincta
                                             Anthophora forbesi
                                             Anthophora fulvicauda
                                             Anthophora fulvicollis
                                             Anthophora fulvitarsis
                                             Anthophora furcata
                                             Anthophora godofredi
                                             Anthophora hispanica
                                             Anthophora hololeuca
                                             Anthophora incerta
                                             Anthophora joetta
                                             Anthophora lesquerellae
                                             Anthophora leucostomella
                                             Anthophora linsleyi
                                             Anthophora maculifrons
                                             Anthophora marginata
                                             Anthophora melanognatha
                                             Anthophora montana
                                             Anthophora mortuaria
                                             Anthophora neglecta
                                             Anthophora nicolai
                                             Anthophora nigritula
                                             Anthophora occidentalis
                                             Anthophora pachyodonta
                                             Anthophora pacifica
                                             Anthophora paranensis
                                             Anthophora peritomae
                                               Anthophora peritomae ssp. interspersa
                                               Anthophora peritomae ssp. tinctula
                                             Anthophora pernicis
                                             Anthophora petrophila
                                             Anthophora phaceliae
                                             Anthophora phenax
                                             Anthophora pilifrons
                                             Anthophora plagiata
                                             Anthophora platti
                                             Anthophora plumipes
                                             Anthophora podagra
                                             Anthophora porterae
                                             Anthophora praecox
                                             Anthophora pubescens
                                             Anthophora pulverosa
                                             Anthophora quadrimaculata
                                             Anthophora retusa
                                             Anthophora rhodesiae
                                             Anthophora rhodothorax
                                             Anthophora robusta
                                             Anthophora rubricrus
                                             Anthophora salazariae
                                             Anthophora senescens
                                             Anthophora simillima
                                               Anthophora simillima ssp. californiensis
                                             Anthophora tarsata
                                               Anthophora tarsata ssp. subtarsata
                                             Anthophora terminalis
                                             Anthophora tsushimensis
                                             Anthophora urbana
                                             Anthophora ursina
                                             Anthophora usticauda
                                             Anthophora vallorum
                                             Anthophora vannigera
                                             Anthophora vestita
                                             Anthophora walshii
                                             Anthophora xanthochlora
                                       Apidae (Apis)
                                             Apis (Apis)
                                             Apis anatoliaea
                                             Apis mellifera
                                             Apis nearctica
                                             Apis samarensis
                              Apinae
                                Anthophorini
                                Apini
                                Emphorini
                                  Emphorina
                                     Alepidosceles
                                             Alepidosceles filitarsis
                                             Alepidosceles imitatrix
                                Ericrocidini
                                     Acanthopus
                                             Acanthopus palmatus
                                Eucerini
                                  Eucerina
                                     Agapanthinus
                                             Agapanthinus callophilus
                                     Alloscirtetica
                                             Alloscirtetica antarctica
                                             Alloscirtetica arrhenica
                                             Alloscirtetica basirufa
                                             Alloscirtetica escomeli
                                             Alloscirtetica frieseana
                                             Alloscirtetica gayi
                                             Alloscirtetica gazullai
                                             Alloscirtetica gilva
                                             Alloscirtetica lanosa
                                             Alloscirtetica mielkei
                                             Alloscirtetica porteri
                                             Alloscirtetica rufitarsis
                                             Alloscirtetica tristrigata
                                Euglossini
                                     Aglae
                                             Aglae caerulea
                                Exomalopsini
                                     Anthophorula
                                             Anthophorula albata
                                             Anthophorula albicans
                                             Anthophorula albovestita
                                             Anthophorula cerei
                                             Anthophorula chionura
                                             Anthophorula compactula
                                             Anthophorula completa
                                             Anthophorula consobrina
                                             Anthophorula cornigera
                                             Anthophorula crenulata
                                             Anthophorula deserticola
                                             Anthophorula eriogoni
                                             Anthophorula euphorbiae
                                             Anthophorula exilis
                                             Anthophorula gutierreziae
                                             Anthophorula interrupta
                                             Anthophorula levigata
                                             Anthophorula minima
                                             Anthophorula morgani
                                     Bombomelecta
                                             Bombomelecta callura
                                             Bombomelecta johnsoni
                                             Bombomelecta semifulva
                                     Bombus
                                             Bombus crotchii
                                               Bombus crotchii ssp. semisuffusus
                                             Bombus nevadensis
                                               Bombus nevadensis ssp. miguelensis
                                     Braunsapis
                                             Braunsapis aureoscopa
                                             Braunsapis hyalina
                                             Braunsapis madacassella
                                     Bremus
                                             Bremus caliginosus
                                               Bremus caliginosus ssp. tardus
                                             Bremus crotchii
                                               Bremus crotchii ssp. nigricaudus
                                             Bremus flavifrons
                                               Bremus flavifrons ssp. vandykei
                                     Centris
                                             Centris anomala
                                             Centris atripes
                                               Centris atripes ssp. ferrisi
                                             Centris caesalpiniae
                                               Centris caesalpiniae ssp. rhodopus
                                             Centris californica
                                             Centris cockerelli
                                               Centris cockerelli ssp. resoluta
                                             Centris eisenii
                                             Centris gelida
                                             Centris hoffmanseggiae
                                               Centris hoffmanseggiae ssp. davidsoni
                                             Centris mourei
                                             Centris mustelina
                                             Centris pallida
                                               Centris pallida ssp. callognatha
                                             Centris rhodoleuca
                                             Centris rhodomelas
                                             Centris tiburonensis
                                             Centris trichosoma
                                             Centris vanduzeei
                                     Ceratina
                                             Ceratina apacheorum
                                             Ceratina arizonensis
                                               Ceratina arizonensis ssp. vanduzeei
                                             Ceratina barbarae
                                             Ceratina braunsi
                                             Ceratina hexae
                                             Ceratina madecassa
                                             Ceratina melanoptera
                                             Ceratina micheneri
                                             Ceratina neomexicana
                                               Ceratina neomexicana ssp. punctigena
                                             Ceratina timberlakei
                                     Clisodon
                                             Clisodon terminalis
                                               Clisodon terminalis ssp. sperryi
                                     Ctenoceratina
                                             Ctenoceratina rossi
                                     Diadasia
                                             Diadasia afflictula
                                             Diadasia angusticeps
                                             Diadasia australis
                                               Diadasia australis ssp. mimetica
                                               Diadasia australis ssp. petrinus
                                             Diadasia blaisdelli
                                             Diadasia consociata
                                             Diadasia crassicauda
                                             Diadasia laticauda
                                             Diadasia lutzi
                                               Diadasia lutzi ssp. deserticola
                                               Diadasia lutzi ssp. difficilis
                                             Diadasia martialis
                                             Diadasia mexicana
                                             Diadasia nigrifrons
                                               Diadasia nigrifrons ssp. epileuca
                                             Diadasia nitidifrons
                                             Diadasia palmarum
                                             Diadasia skinneri
                                             Diadasia sphaeralcearum
                                               Diadasia sphaeralcearum ssp. affinis
                                             Diadasia tuberculifrons
                                             Diadasia vallicola
                                             Diadasia vestita
                                     Emphor
                                             Emphor fuscojubatus
                                     Emphoropsis
                                             Emphoropsis cressoni
                                             Emphoropsis excellens
                                             Emphoropsis floridana
                                               Emphoropsis floridana ssp. fedorensis
                                             Emphoropsis labriosa
                                             Emphoropsis mucida
                                               Emphoropsis mucida ssp. johnsoni
                                             Emphoropsis murihirta
                                             Emphoropsis salviae
                                     Entechnia
                                             Entechnia dakotensis
                                             Entechnia grisella
                                     Epeolus
                                             Epeolus arciferus
                                             Epeolus brevicornis
                                             Epeolus brumleyi
                                             Epeolus cretus
                                             Epeolus eastwoodae
                                             Epeolus geminatus
                                             Epeolus heterurus
                                             Epeolus melectimimus
                                             Epeolus mesillae
                                               Epeolus mesillae ssp. palmarum
                                             Epeolus permixtus
                                             Epeolus pilatei
                                             Epeolus piscatoris
                                             Epeolus rubrostictus
                                             Epeolus rufomaculatus
                                             Epeolus tessieris
                                             Epeolus tsushimensis
                                     Ericrocis
                                             Ericrocis rossi
                                             Ericrocis rugosa
                                     Exomalopsis
                                             Exomalopsis aequalis
                                             Exomalopsis affabilis
                                             Exomalopsis albata
                                             Exomalopsis albovestita
                                             Exomalopsis apicalis
                                             Exomalopsis arcuata
                                             Exomalopsis bechteli
                                             Exomalopsis boharti
                                             Exomalopsis brevicornis
                                             Exomalopsis cerei
                                             Exomalopsis chionura
                                             Exomalopsis chlorina
                                             Exomalopsis cockerelli
                                             Exomalopsis comitanensis
                                             Exomalopsis consobrina
                                             Exomalopsis crassicornis
                                             Exomalopsis deserticola
                                             Exomalopsis digressa
                                             Exomalopsis dimidiata
                                             Exomalopsis eriogoni
                                             Exomalopsis euphorbiae
                                             Exomalopsis exilis
                                             Exomalopsis fulvihirta
                                             Exomalopsis gutierreziae
                                             Exomalopsis halli
                                             Exomalopsis hurdi
                                             Exomalopsis levigata
                                             Exomalopsis linsleyi
                                             Exomalopsis minima
                                             Exomalopsis nigrihirta
                                             Exomalopsis notabilis
                                             Exomalopsis oaxacana
                                             Exomalopsis palmarum
                                             Exomalopsis parva
                                             Exomalopsis pulchella
                                               Exomalopsis pulchella ssp. arida
                                             Exomalopsis punctatissima
                                             Exomalopsis robustula
                                             Exomalopsis rufiventris
                                             Exomalopsis scapalis
                                             Exomalopsis sonorensis
                                             Exomalopsis tricincta
                                             Exomalopsis tricinctula
                                             Exomalopsis varleyi
                                     Gaesischia
                                             Gaesischia mexicana
                                     Gnathopasites
                                             Gnathopasites mojavensis
                                             Gnathopasites sierrae
                                             Gnathopasites timberlakei
                                     Halterapis
                                             Halterapis isaloensis
                                             Halterapis tulearensis
                                     Hesperonomada
                                             Hesperonomada melanantha
                                     Hexepeolus
                                             Hexepeolus mojavensis
                                             Hexepeolus rhodogyne
                                     Holcopasites
                                             Holcopasites bigibbosus
                                             Holcopasites bohartorum
                                             Holcopasites cazieri
                                             Holcopasites linsleyi
                                     Isepeolus
                                             Isepeolus eickworti
                                             Isepeolus lanhami
                                     Isomalopsis
                                             Isomalopsis californica
                                     Martinapis
                                             Martinapis occidentalis
                                     Megabombus
                                             Megabombus honshuensis
                                     Melanempis
                                             Melanempis fulva
                                     Melecta
                                             Melecta bohartorum
                                             Melecta interrupta
                                               Melecta interrupta ssp. fallugiae
                                             Melecta separata
                                               Melecta separata ssp. mojavensis
                                             Melecta sierrae
                                     Melipona
                                             Melipona fasciata
                                               Melipona fasciata ssp. cramptoni
                                             Melipona mimetica
                                     Melissodes
                                             Melissodes agilis
                                               Melissodes agilis ssp. subagilis
                                             Melissodes alopex
                                             Melissodes appressa
                                             Melissodes atrifera
                                               Melissodes atrifera ssp. sandiarum
                                             Melissodes atripes
                                               Melissodes atripes ssp. acomanche
                                             Melissodes baileyi
                                             Melissodes bidentis
                                             Melissodes bimatris
                                             Melissodes brevipyga
                                             Melissodes bruesi
                                             Melissodes calloleuca
                                             Melissodes callophila
                                               Melissodes callophila ssp. nanula
                                             Melissodes catalinensis
                                               Melissodes catalinensis ssp. vanduzeei
                                             Melissodes cerussata
                                             Melissodes clarkiae
                                             Melissodes comata
                                             Melissodes communis
                                               Melissodes communis ssp. gratior
                                             Melissodes confusiformis
                                               Melissodes confusiformis ssp. incondita
                                             Melissodes dagosa
                                             Melissodes glenwoodensis
                                             Melissodes grindeliae
                                             Melissodes helianthelli
                                             Melissodes helianthophila
                                             Melissodes hewetti
                                             Melissodes hurdi
                                             Melissodes idonea
                                             Melissodes loena
                                             Melissodes machaerantherae
                                             Melissodes martini
                                               Melissodes martini ssp. hitei
                                             Melissodes megacerata
                                             Melissodes melandri
                                             Melissodes melanosoma
                                             Melissodes metenua
                                               Melissodes metenua ssp. ablusa
                                             Melissodes minuscula
                                             Melissodes mizeae
                                             Melissodes moorei
                                             Melissodes nigrosignata
                                             Melissodes obliqua
                                               Melissodes obliqua ssp. expurgata
                                             Melissodes octobris
                                             Melissodes paroselae
                                             Melissodes pecosella
                                               Melissodes pecosella ssp. verbesinarum
                                             Melissodes perpolita
                                             Melissodes petulciformis
                                             Melissodes plumosa
                                             Melissodes pullatella
                                             Melissodes sabinensis
                                               Melissodes sabinensis ssp. nubila
                                             Melissodes saponellus
                                             Melissodes scotti
                                             Melissodes semiagilis
                                               Melissodes semiagilis ssp. perlusa
                                             Melissodes sonorensis
                                             Melissodes stearnsi
                                             Melissodes terminata
                                             Melissodes tescorum
                                             Melissodes texana
                                               Melissodes texana ssp. eluta
                                               Melissodes texana ssp. flaveriae
                                             Melissodes tuckeri
                                             Melissodes xanthopteralis
                                     Neolarra
                                             Neolarra alba
                                             Neolarra californica
                                             Neolarra clavigera
                                             Neolarra coloradensis
                                             Neolarra hurdi
                                             Neolarra linsleyi
                                             Neolarra vandykei
                                             Neolarra vittata
                                     Neopasites
                                             Neopasites arizonicus
                                             Neopasites eamia
                                             Neopasites insoletus
                                             Neopasites minimus
                                             Neopasites robertsoni
                                               Neopasites robertsoni ssp. pubescens
                                     Nomada
                                             Nomada (Asteronomada)
                                             Nomada (Nomadita)
                                             Nomada hesperia
                                               Nomada hesperia ssp. falconis
                                             Nomada klamathensis
                                             Nomada koreana
                                             Nomada parkeri
                                             Nomada peninsularis
                                             Nomada portalensis
                                             Nomada timberlakei
                              Nomadinae
                                Ammobatini
                                     Ammobates
                                             Ammobates muticus
                                             Ammobates oraniensis
                                             Ammobates punctatus
                                Ammobatoidini
                                     Ammobatoides
                                             Ammobatoides abdominalis
                                     Oreopasites
                                             Oreopasites albinota
                                             Oreopasites arizonica
                                             Oreopasites hurdi
                                             Oreopasites powelli
                                             Oreopasites scituli
                                             Oreopasites vanduzeei
                                     Orientalibombus
                                             Orientalibombus haemorrhoidalis
                                               Orientalibombus haemorrhoidalis ssp. semialbopleuralis
                                     Pachymelus
                                             Pachymelus limbatus
                                     Paranomada
                                             Paranomada californica
                                             Paranomada nitida
                                             Paranomada velutina
                                     Pectinapis
                                             Pectinapis auricauda
                                             Pectinapis fasciata
                                             Pectinapis fasciatella
                                     Peponapis
                                             Peponapis azteca
                                             Peponapis michelbacherorum
                                             Peponapis smithi
                                             Peponapis timberlakei
                                     Protepeolus
                                             Protepeolus integer
                                             Protepeolus singularis
                                     Pseudomelecta
                                             Pseudomelecta pasadenensis
                                     Rhopalolemma
                                             Rhopalolemma robertsi
                                     Simanthedon
                                             Simanthedon linsleyi
                                     Svastra
                                             Svastra pallidior
                                     Synhalonia
                                             Synhalonia albescens
                                             Synhalonia amoena
                                             Synhalonia amsinckiae
                                             Synhalonia angustifrons
                                             Synhalonia astragalina
                                             Synhalonia belfragei
                                               Synhalonia belfragei ssp. virgata
                                             Synhalonia californica
                                               Synhalonia californica ssp. deserticola
                                             Synhalonia conditi
                                             Synhalonia crenulaticornis
                                               Synhalonia crenulaticornis ssp. lippiae
                                             Synhalonia delphinii
                                             Synhalonia dorsata
                                             Synhalonia frater
                                               Synhalonia frater ssp. aragalli
                                             Synhalonia gillettei
                                             Synhalonia hirsutior
                                             Synhalonia hurdi
                                             Synhalonia idiotes
                                             Synhalonia ignota
                                             Synhalonia lunata
                                             Synhalonia mohavensis
                                             Synhalonia monozona
                                             Synhalonia primiveris
                                             Synhalonia quadricincta
                                             Synhalonia territella
                                             Synhalonia tricinctella
                                             Synhalonia truttae
                                             Synhalonia zonata
                                     Tapinotaspis
                                             Tapinotaspis rufohirtipedis
                                     Tetrahalonia
                                             Tetrahalonia venusta
                                               Tetrahalonia venusta ssp. carinata
                                     Tetralonia
                                             Tetralonia annae
                                               Tetralonia annae ssp. patruelis
                                             Tetralonia argyrophila
                                             Tetralonia astragalina
                                               Tetralonia astragalina ssp. clarissima
                                             Tetralonia birkmanniella
                                             Tetralonia chrysobotyrae
                                             Tetralonia chrysophila
                                             Tetralonia cordleyi
                                               Tetralonia cordleyi ssp. orophila
                                             Tetralonia douglasiana
                                             Tetralonia edwardsii
                                               Tetralonia edwardsii ssp. vagabunda
                                             Tetralonia fedoris
                                             Tetralonia lata
                                               Tetralonia lata ssp. lautipes
                                             Tetralonia phaceliae
                                             Tetralonia pomonae
                                             Tetralonia yakimensis
                                     Tetraloniella
                                             Tetraloniella vandykei
                                     Townsendiella
                                             Townsendiella californica
                                             Townsendiella rufiventris
                                     Triepeolus
                                             Triepeolus antiochensis
                                             Triepeolus blaisdelli
                                             Triepeolus brunnescens
                                             Triepeolus diversipes
                                             Triepeolus eliseae
                                             Triepeolus haematurus
                                             Triepeolus inyoensis
                                             Triepeolus lineatulus
                                             Triepeolus melanarius
                                             Triepeolus mensae
                                             Triepeolus mojavensis
                                             Triepeolus pacis
                                             Triepeolus pallidiventris
                                             Triepeolus saturninus
                                             Triepeolus schwarzi
                                               Triepeolus schwarzi ssp. subcalens
                                             Triepeolus simulatus
                                             Triepeolus vandykei
                                     Triopasites
                                             Triopasites laguna
                                             Triopasites micheneri
                                             Triopasites timberlakei
                                     Xenoglossa
                                             Xenoglossa crawfordi
                                             Xenoglossa davidsoni
                                     Xenoglossodes
                                             Xenoglossodes excurrens
                                             Xenoglossodes gutierreziae
                                             Xenoglossodes neotomae
                                             Xenoglossodes wilmattae
                                     Xylocopa
                                             Xylocopa californica
                                               Xylocopa californica ssp. diamesa
                                             Xylocopa darwini
                                             Xylocopa fallax
                                               Xylocopa fallax ssp. thompsoni
                                             Xylocopa orpifex
                                               Xylocopa orpifex ssp. androleuca
                                             Xylocopa tabaniformis
                                               Xylocopa tabaniformis ssp. melanosoma
                                               Xylocopa tabaniformis ssp. parkinsoniae
                                               Xylocopa tabaniformis ssp. sylvicola
                              Xylocopinae
                                Allodapini
                                Ceratinini