| Agapanthinus callophila Cockerell, 1923 | |
| Ancyloscelis apiformis Fabricius, 1793 | |
| Ancyloscelis sejuncta Cockerell, 1933 | |
| Anthophora (Anthophoroides) californica Cresson, 1869 | California Anthophora |
| Anthophora (Anthophoroides) linsleyi Timberlake, 1941 | |
| Anthophora (Anthophoroides) marginata Smith, 1854 | |
| Anthophora (Anthophoroides) phaceliae Brooks, 1988 | |
| Anthophora (Anthophoroides) signata Brooks, 1988 | |
| Anthophora (Anthophoroides) vallorum Cockerell, 1896 | |
| Anthophora (Clisodon) furcata Panzer, 1798 | Fork Tailed Flower Bee |
| Anthophora (Clisodon) terminalis Cresson, 1869 | Orange-Tipped Wood-Digger Bee |
| Anthophora (Heliophila) abroniae Timberlake, 1937 | |
| Anthophora (Heliophila) albata Cresson, 1876 | |
| Anthophora (Heliophila) cockerelli Timberlake, 1937 | |
| Anthophora (Heliophila) columbariae Timberlake &..., 1937 | |
| Anthophora (Heliophila) exigua Cresson, 1879 | |
| Anthophora (Heliophila) flavocincta Huard, 1897 | |
| Anthophora (Heliophila) hololeuca Cockerell, 1923 | |
| Anthophora (Heliophila) maculifrons Cresson, 1879 | |
| Anthophora (Heliophila) mortuaria Timberlake, 1937 | |
| Anthophora (Heliophila) peritomae Cockerell, 1905 | |
| Anthophora (Heliophila) petrophila Cockerell, 1905 | |
| Anthophora (Heliophila) phenax Cockerell, 1898 | |
| Anthophora (Heliophila) salazariae Timberlake, 1937 | |
| Anthophora (Heliophila) squammulosa Dours, 1869 | |
| Anthophora (Lophanthophora) affabilis Cresson, 1878 | |
| Anthophora (Lophanthophora) coptognatha Timberlake, 1951 | |
| Anthophora (Lophanthophora) dammersi Timberlake, 1937 | |
| Anthophora (Lophanthophora) fedorica Cockerell, 1906 | |
| Anthophora (Lophanthophora) neglecta Timberlake &..., 1936 | |
| Anthophora (Lophanthophora) pacifica Cresson, 1878 | |
| Anthophora (Lophanthophora) porterae Cockerell, 1900 | |
| Anthophora (Lophanthophora) ursina Cresson, 1869 | |
| Anthophora (Melea) abrupta Say, 1837 | Vegetable hummingbird |
| Anthophora (Melea) bomboides Kirby, 1837 | Bumble-bee-mimic Anthophora |
| Anthophora (Melea) occidentalis Cresson, 1869 | Digger bee |
| Anthophora (Micranthophora) rhodothorax Michener, 1936 | |
| Anthophora (Mystacanthophora) capistrata Cresson, 1878 | |
| Anthophora (Mystacanthophora) montana Cresson, 1869 | Rocky Mountain Anthophora |
| Anthophora (Mystacanthophora) urbana Cresson, 1878 | |
| Anthophora (Mystacanthophora) walshii Cresson, 1869 | Walsh´s Anthophora |
| Anthophora (Paramegilla) centriformis Cresson, 1879 | |
| Anthophora (Paramegilla) fulvicauda Timberlake, 1937 | |
| Anthophora (Pyganthophora) crotchii Cresson, 1878 | Crotch´s Anthophora |
| Anthophora (Pyganthophora) edwardsii Cresson, 1878 | |
| Anthophora (Pyganthophora) forbesi Cockerell, 1907 | |
| Anthophora (Pyganthophora) lesquerellae Cockerell, 1896 | |
| Anthophora arthuri Cockerell, 1906 | |
| Anthophora citreostrigata Dours, 1868 | |
| Anthophora erythrothorax Michener, 1936 | |
| Anthophora estebana Cockerell, 1923 | |
| Anthophora flexipes Cresson, 1879 | |
| Anthophora frontata Say, 1837 | |
| Anthophora fuscipennis Smith, 1854 | |
| Anthophora nigritula Cockerell, 1924 | |
| Anthophora pachyodonta Cockerell, 1923 | |
| Anthophora platti Timberlake, 1951 | |
| Anthophora vannigera Timberlake, 1951 | |
| Anthophorula (Anthophorisca) chionura Cockerell, 1925 | |
| Anthophorula (Anthophorisca) consobrina Timberlake, 1980 | |
| Anthophorula (Anthophorisca) micheneri Timberlake, 1947 | |
| Anthophorula (Anthophorisca) nitens Cockerell, 1915 | |
| Anthophorula (Anthophorisca) parva Timberlake, 1980 | |
| Anthophorula (Anthophorisca) sidae Cockerell, 1897 | |
| Anthophorula (Anthophorisca) texana Friese, 1899 | |
| Anthophorula (Anthophorula) albata Timberlake, 1947 | |
| Anthophorula (Anthophorula) albovestita Timberlake, 1947 | |
| Anthophorula (Anthophorula) cerei Timberlake, 1947 | |
| Anthophorula (Anthophorula) deserticola Timberlake, 1947 | |
| Anthophorula (Anthophorula) eriogoni Timberlake, 1947 | |
| Anthophorula (Anthophorula) euphorbiae Timberlake, 1947 | |
| Anthophorula (Anthophorula) gutierreziae Timberlake, 1947 | |
| Anthophorula (Anthophorula) interrupta Timberlake, 1980 | |
| Anthophorula (Anthophorula) rufiventris Timberlake, 1947 | |
| Anthophorula (Anthophorula) torticornis Cockerell, 1927 | |
| Anthophorula asteris Mitchell, 1962 | |
| Anthophorula beameri Timberlake, 1980 | |
| Anthophorula centralis Timberlake, 1980 | |
| Anthophorula chlorina Cockerell, 1918 | |
| Anthophorula cockerelli Timberlake, 1980 | |
| Anthophorula cornigera Cockerell, 1922 | |
| Anthophorula crenulata Timberlake, 1980 | |
| Anthophorula fuscicornis Timberlake, 1980 | |
| Anthophorula halli Timberlake, 1980 | |
| Anthophorula ignota Timberlake, 1980 | |
| Anthophorula imparilis Timberlake, 1980 | |
| Anthophorula nevadensis Timberlake, 1980 | |
| Anthophorula palmarum Timberlake, 1947 | |
| Anthophorula rozeni Timberlake, 1980 | |
| Anthophorula scapalis Timberlake, 1980 | |
| Anthophorula tricinctula Timberlake, 1980 | |
| Anthophorula varleyi Timberlake, 1947 | |
| Anthophorula yoloensis Timberlake, 1980 | |
| Apis (Apis) mellifera Linnaeus, 1758 | Drone-Bee |
| Bombus (Alpinobombus) balteatus Dahlbom, 1832 | Baltic bumblebee |
| Bombus (Alpinobombus) hyperboreus Schönherr, 1809 | Great arctic bumblebee |
| Bombus (Alpinobombus) polaris Curtis, 1835 | Polar Bumble Bee |
| Bombus (Bombias) auricomus Robertson, 1903 | Black and gold bumble bee |
| Bombus (Bombus) affinis Cresson, 1863 | Rusty patch bumble bee |
| Bombus (Bombus) lantschouensis Vogt, 1908 | |
| Bombus (Bombus) lucorum (Linnaeus, 1761) | ⇒ Bombus lantschouensis Vogt, 1908 |
| Bombus (Bombus) nevadensis Cresson, 1874 | Nevada bumble bee |
| Bombus (Bombus) terricola Kirby, 1837 | Yellow-banded Bumble Bee |
| Bombus (Crotchiibombus) crotchii Cresson, 1878 | Crotch bumble bee |
| Bombus (Cullumanobombus) griseocollis De Geer, 1773 | Brown-belted Bumble Bee |
| Bombus (Cullumanobombus) morrisoni Cresson, 1878 | Morrison bumble bee |
| Bombus (Cullumanobombus) rufocinctus Cresson, 1863 | Red-belted Bumble Bee |
| Bombus (Fervidobombus) californicus (Smith, 1854) | ⇒ Bombus fervidus Fabricius, 1798 |
| Bombus (Fervidobombus) fervidus Fabricius, 1798 | Golden Northern Bumble Bee |
| Bombus (Fraternobombus) fraternus Smith, 1854 | Southern plains bumble bee |
| Bombus (Kallobombus) soroeensis Fabricius, 1776 | Broken-belted Bumble Bee |
| Bombus (Psithyrus) ashtoni Cresson, 1864 | Ashton cuckoo bumble bee |
| Bombus (Psithyrus) citrinus Smith, 1854 | Lemon cuckoo bumble bee |
| Bombus (Psithyrus) suckleyi Greene, 1860 | Suckley Cuckoo Bumble Bee |
| Bombus (Pyrobombus) bifarius Cresson, 1878 | Black-notched Bumble Bee |
| Bombus (Pyrobombus) bimaculatus Cresson, 1863 | Two-spotted Bumble Bee |
| Bombus (Pyrobombus) caliginosus Frison, 1927 | Fog-belt Bumble Bee |
| Bombus (Pyrobombus) centralis Cresson, 1864 | Central bumble bee |
| Bombus (Pyrobombus) cockerelli Franklin, 1913 | Cockerell's bumble bee |
| Bombus (Pyrobombus) flavifrons Cresson, 1863 | Yellow head bumble bee |
| Bombus (Pyrobombus) frigidus Smith, 1854 | Frigid Bumble Bee |
| Bombus (Pyrobombus) huntii Greene, 1860 | Hunt bumble bee |
| Bombus (Pyrobombus) impatiens Cresson, 1863 | Common eastern bumble bee |
| Bombus (Pyrobombus) melanopygus Nylander, 1848 | Black tail bumble bee |
| Bombus (Pyrobombus) mixtus Cresson, 1878 | Fuzzy-horned bumble bee |
| Bombus (Pyrobombus) perplexus (Cresson, 1863) | ⇒ Bombus soroeensis Fabricius, 1776 |
| Bombus (Pyrobombus) sandersoni Franklin, 1913 | Sanderson bumble bee |
| Bombus (Pyrobombus) sitkensis Nylander, 1848 | Sitka bumble bee |
| Bombus (Pyrobombus) sylvicola Kirby, 1837 | Forest bumble bee |
| Bombus (Pyrobombus) ternarius Say, 1837 | Orange-belted Bumble Bee |
| Bombus (Pyrobombus) vagans Smith, 1854 | Half-black bumble bee |
| Bombus (Pyrobombus) vandykei Frison, 1927 | Van Dyke bumble bee |
| Bombus (Pyrobombus) vosnesenskii Radoszkowski, 1862 | Vosnesensky bumble bee |
| Bombus (Separatobombus) griseocollis (DeGeer, 1773) | ⇒ Bombus griseocollis De Geer, 1773 |
| Bombus (Separatobombus) morrisoni (Cresson, 1878) | ⇒ Bombus morrisoni Cresson, 1878 |
| Bombus (Subterraneobombus) appositus Cresson, 1878 | Mountain Bumble Bee |
| Bombus (Subterraneobombus) borealis Kirby, 1837 | Northern amber bumble bee |
| Bombus edwardsii (Nylander, 1848) | ⇒ Bombus melanopygus Nylander, 1848 |
| Bombus fervida Fabricius, 1798 | |
| Bombus melanopyge Nylander, 1848 | |
| Bombus pensylvanica De Geer, 1773 | |
| Bombus pleuralis Nylander, 1848 | |
| Bombus praticola Kirby, 1837 | |
| Bombus strenuus Cresson, 1863 | |
| Brachymelecta mucida Cresson, 1879 | |
| Cemolobus ipomoeae Robertson, 1891 | |
| Centris (Centris) decolorata Lepeletier, 1841 | Crazy Beach Bee |
| Centris (Centris) flavofasciata Friese, 1900 | |
| Centris (Centris) versicolor Fabricius, 1775 | |
| Centris (Heterocentris) nitida Smith, 1874 | Arnold's dogwood |
| Centris (Heterocentris) transversa Perez, 1905 | |
| Centris (Paracentris) aterrima Smith, 1854 | |
| Centris (Paracentris) atripes Mocsáry, 1899 | |
| Centris (Paracentris) caesalpiniae Cockerell, 1897 | |
| Centris (Paracentris) californica Timberlake, 1940 | |
| Centris (Paracentris) cockerelli Fox, 1899 | |
| Centris (Paracentris) hoffmanseggiae Cockerell, 1897 | |
| Centris (Paracentris) lanosa Cresson, 1872 | |
| Centris (Paracentris) mexicana Smith, 1854 | |
| Centris (Paracentris) pallida Fox, 1899 | Pallid Bee |
| Centris (Paracentris) rhodopus Cockerell, 1897 | Red-legged Centris |
| Centris (Paracentris) tiburonensis Cockerell, 1923 | |
| Centris (Paracentris) zacateca Snelling, 1966 | |
| Centris angustifrons Snelling, 1966 | |
| Centris eiseni Fox, 1894 | |
| Centris rhodomelas Timberlake, 1940 | |
| Centris ruthannae Snelling, 1966 | |
| Diadasia (Coquillettapis) afflicta Cresson, 1878 | |
| Diadasia (Coquillettapis) afflictula Cockerell, 1910 | |
| Diadasia (Coquillettapis) angusticeps Timberlake, 1939 | |
| Diadasia (Coquillettapis) australis Cresson, 1878 | |
| Diadasia (Coquillettapis) bituberculata Cresson, 1878 | |
| Diadasia (Coquillettapis) consociata Timberlake, 1939 | |
| Diadasia (Coquillettapis) diminuta Cresson, 1878 | |
| Diadasia (Coquillettapis) laticauda Cockerell, 1905 | |
| Diadasia (Coquillettapis) lutzi Cockerell, 1924 | |
| Diadasia (Coquillettapis) martialis Timberlake, 1940 | |
| Diadasia (Coquillettapis) megamorpha Cockerell, 1898 | |
| Diadasia (Coquillettapis) nigrifrons Cresson, 1878 | |
| Diadasia (Coquillettapis) nitidifrons Cockerell, 1905 | |
| Diadasia (Coquillettapis) opuntiae Cockerell, 1901 | |
| Diadasia (Coquillettapis) palmarum Timberlake, 1940 | |
| Diadasia (Coquillettapis) piercei Cockerell, 1911 | |
| Diadasia (Coquillettapis) rinconis Cockerell, 1897 | |
| Diadasia (Coquillettapis) sphaeralcearum Cockerell, 1905 | |
| Diadasia (Coquillettapis) tuberculifrons Timberlake, 1939 | |
| Diadasia (Coquillettapis) vallicola Timberlake, 1940 | |
| Diadasia (Dasiapis) ochracea Cockerell, 1903 | Ochraceous Chimney Bee |
| Diadasia (Diadasia) enavata Cresson, 1872 | Sunflower Chimney Bee |
| Diadasia albovestita Provancher, 1896 | |
| Diadasia friesei Cockerell, 1898 | |
| Diadasia vestita (Timberlake, 1956) | ⇒ Diadasia megamorpha Cockerell, 1898 |
| Epeoloides obscura Swenk, 1907 | |
| Epeoloides pilosula (Cresson, 1878) | ⇒ Epeoloides pilosulus Cresson, 1878 |
| Epeoloides pilosulus Cresson, 1878 | |
| Ericrocis lata Cresson, 1878 | |
| Ericrocis pintada Snelling & Z..., 1984 | |
| Eucera (Synhalonia) actuosa Cresson, 1878 | |
| Eucera (Synhalonia) albescens Timberlake, 1969 | |
| Eucera (Synhalonia) amsinckiae Timberlake, 1969 | |
| Eucera (Synhalonia) angustifrons Timberlake, 1969 | |
| Eucera (Synhalonia) atriventris Smith, 1854 | |
| Eucera (Synhalonia) birkmanniella Cockerell, 1906 | |
| Eucera (Synhalonia) californica Cresson, 1878 | |
| Eucera (Synhalonia) chrysophila Cockerell, 1914 | |
| Eucera (Synhalonia) cordleyi Viereck, 1905 | |
| Eucera (Synhalonia) dorsata Timberlake, 1969 | |
| Eucera (Synhalonia) douglasiana Cockerell, 1906 | |
| Eucera (Synhalonia) dubitata Cresson, 1878 | |
| Eucera (Synhalonia) edwardsii Cresson, 1878 | |
| Eucera (Synhalonia) fulvitarsis Cresson, 1878 | |
| Eucera (Synhalonia) fulvohirta Cresson, 1878 | |
| Eucera (Synhalonia) hamata Bradley, 1942 | |
| Eucera (Synhalonia) hurdi Timberlake, 1969 | |
| Eucera (Synhalonia) lepida Cresson, 1878 | |
| Eucera (Synhalonia) lunata Timberlake, 1969 | |
| Eucera (Synhalonia) lycii Cockerell, 1897 | |
| Eucera (Synhalonia) mohavensis Timberlake, 1969 | |
| Eucera (Synhalonia) quadricincta Timberlake, 1969 | |
| Eucera (Synhalonia) rosae Robertson, 1900 | |
| Eucera (Synhalonia) truttae Cockerell, 1905 | |
| Eucera acerba Cresson, 1879 | |
| Eucera argyrophila Cockerell, 1909 | |
| Eucera bakeri Timberlake, 1973 | |
| Eucera cercidis Timberlake, 1969 | |
| Eucera chrysobotryae Cockerell, 1908 | |
| Eucera conformis Timberlake, 1969 | |
| Eucera delphinii Timberlake, 1969 | |
| Eucera hirsutissima Cockerell, 1916 | |
| Eucera illinoensis Robertson, 1902 | |
| Eucera intermedia Cresson, 1872 | |
| Eucera lutziana Cockerell, 1933 | |
| Eucera maculata Lepeletier, 1841 | |
| Eucera monozona Timberlake, 1969 | |
| Eucera pagosana Cockerell, 1925 | |
| Eucera pallidihirta Timberlake, 1969 | |
| Eucera phaceliae Cockerell, 1911 | |
| Eucera stretchii Cresson, 1878 | |
| Eucera suavis Cresson, 1878 | |
| Eucera texana Timberlake, 1969 | |
| Eucera tricinctella Timberlake, 1969 | |
| Eucera venusta Timberlake, 1961 | |
| Eucera zonata Timberlake, 1969 | |
| Eulaema (Apeulaema) polychroma Mocsáry, 1899 | |
| Exomalopsis (Exomalopsis) analis Spinola, 1853 | |
| Exomalopsis (Exomalopsis) mellipes Cresson, 1878 | |
| Exomalopsis (Exomalopsis) similis Cresson, 1865 | Winged surfclam |
| Exomalopsis (Phanomalopsis) snowi Cockerell, 1906 | |
| Exomalopsis (Stilbomalopsis) birkmanni Cockerell, 1922 | |
| Exomalopsis (Stilbomalopsis) solani Cockerell, 1896 | Solanum Exomalopsis |
| Exomalopsis (Stilbomalopsis) solidaginis Cockerell, 1898 | |
| Exomalopsis albata (Timberlake, 1947) | ⇒ Anthophorula albata Timberlake, 1947 |
| Exomalopsis albicans Provancher, 1896 | |
| Exomalopsis albovestita (Timberlake, 1947) | ⇒ Anthophorula albovestita Timberlake, 1947 |
| Exomalopsis asteris (Mitchell, 1962) | ⇒ Anthophorula asteris Mitchell, 1962 |
| Exomalopsis beameri (Timberlake, 1980) | ⇒ Anthophorula beameri Timberlake, 1980 |
| Exomalopsis centralis (Timberlake, 1980) | ⇒ Anthophorula centralis Timberlake, 1980 |
| Exomalopsis cerei (Timberlake, 1947) | ⇒ Anthophorula cerei Timberlake, 1947 |
| Exomalopsis chionura (Cockerell, 1925) | ⇒ Anthophorula chionura Cockerell, 1925 |
| Exomalopsis chlorina (Cockerell, 1918) | ⇒ Anthophorula chlorina Cockerell, 1918 |
| Exomalopsis cockerelli (Timberlake, 1980) | ⇒ Anthophorula cockerelli Timberlake, 1980 |
| Exomalopsis compactula Cockerell, 1897 | |
| Exomalopsis completa Cockerell, 1935 | |
| Exomalopsis consobrina (Timberlake, 1980) | ⇒ Anthophorula consobrina Timberlake, 1980 |
| Exomalopsis cornigera (Cockerell, 1922) | ⇒ Anthophorula cornigera Cockerell, 1922 |
| Exomalopsis crenulata (Timberlake, 1980) | ⇒ Anthophorula crenulata Timberlake, 1980 |
| Exomalopsis deserticola (Timberlake, 1947) | ⇒ Anthophorula deserticola Timberlake, 1947 |
| Exomalopsis dimidiata Timberlake, 1980 | |
| Exomalopsis eriogoni (Timberlake, 1947) | ⇒ Anthophorula eriogoni Timberlake, 1947 |
| Exomalopsis euphorbiae (Timberlake, 1947) | ⇒ Anthophorula euphorbiae Timberlake, 1947 |
| Exomalopsis fuscicornis (Timberlake, 1980) | ⇒ Anthophorula fuscicornis Timberlake, 1980 |
| Exomalopsis globosa (Fabricius, 1793) | ⇒ Exomalopsis similis Cresson, 1865 |
| Exomalopsis gutierreziae (Timberlake, 1947) | ⇒ Anthophorula gutierreziae Timberlake, 1947 |
| Exomalopsis halli (Timberlake, 1980) | ⇒ Anthophorula halli Timberlake, 1980 |
| Exomalopsis hurdi Timberlake, 1980 | |
| Exomalopsis ignota (Timberlake, 1980) | ⇒ Anthophorula ignota Timberlake, 1980 |
| Exomalopsis imparilis (Timberlake, 1980) | ⇒ Anthophorula imparilis Timberlake, 1980 |
| Exomalopsis interrupta (Timberlake, 1980) | ⇒ Anthophorula interrupta Timberlake, 1980 |
| Exomalopsis micheneri (Timberlake, 1947) | ⇒ Anthophorula micheneri Timberlake, 1947 |
| Exomalopsis morgani Cockerell, 1914 | |
| Exomalopsis nevadensis (Timberlake, 1980) | ⇒ Anthophorula nevadensis Timberlake, 1980 |
| Exomalopsis nitens (Cockerell, 1915) | ⇒ Anthophorula nitens Cockerell, 1915 |
| Exomalopsis palmarum (Timberlake, 1947) | ⇒ Anthophorula palmarum Timberlake, 1947 |
| Exomalopsis parva (Timberlake, 1980) | ⇒ Anthophorula parva Timberlake, 1980 |
| Exomalopsis penelope (Cockerell, 1897) | ⇒ Exomalopsis similis Cresson, 1865 |
| Exomalopsis pygmaea Cresson, 1872 | |
| Exomalopsis rozeni (Timberlake, 1980) | ⇒ Anthophorula rozeni Timberlake, 1980 |
| Exomalopsis rufiventris (Timberlake, 1947) | ⇒ Anthophorula rufiventris Timberlake, 1947 |
| Exomalopsis scapalis (Timberlake, 1980) | ⇒ Anthophorula scapalis Timberlake, 1980 |
| Exomalopsis sidae (Cockerell, 1897) | ⇒ Anthophorula sidae Cockerell, 1897 |
| Exomalopsis texana (Friese, 1899) | ⇒ Anthophorula texana Friese, 1899 |
| Exomalopsis tibialis Timberlake, 1980 | |
| Exomalopsis torticornis (Cockerell, 1927) | ⇒ Anthophorula torticornis Cockerell, 1927 |
| Exomalopsis tricinctula (Timberlake, 1980) | ⇒ Anthophorula tricinctula Timberlake, 1980 |
| Exomalopsis varleyi (Timberlake, 1947) | ⇒ Anthophorula varleyi Timberlake, 1947 |
| Exomalopsis yoloensis (Timberlake, 1980) | ⇒ Anthophorula yoloensis Timberlake, 1980 |
| Exomalopsis zexmeniae (Cockerell, 1912) | ⇒ Exomalopsis analis Spinola, 1853 |
| Florilegus condigna Cresson, 1878 | |
| Gaesischia (Gaesischia) exul Michener, La..., 1955 | |
| Habropoda birkmanni (Cockerell, 1905) | ⇒ Habropoda morrisoni Cresson, 1878 |
| Habropoda cineraria Smith, 1879 | |
| Habropoda citulus Cockerell, 1929 | |
| Habropoda cressoni Dalla Torre, 1896 | |
| Habropoda dammersi Timberlake, 1937 | |
| Habropoda depressa Fowler, 1899 | |
| Habropoda excellens Timberlake, 1962 | |
| Habropoda interspersa Cockerell, 1905 | |
| Habropoda laboriosus Fabricius, 1804 | |
| Habropoda miserabilis Cresson, 1878 | |
| Habropoda morrisoni Cresson, 1878 | |
| Habropoda murihirta Cockerell, 1905 | |
| Habropoda murina Cockerell, 1909 | |
| Habropoda pallida Timberlake, 1937 | Pallid Habropoda |
| Habropoda pascoensis Cockerell, 1898 | |
| Habropoda rugosissima Cockerell, 1905 | |
| Habropoda salviae Michener, 1936 | |
| Habropoda salviarum Cockerell, 1898 | |
| Habropoda semifulva Cockerell, 1905 | |
| Habropoda tristissima Cockerell, 1904 | |
| Habropoda vierecki Cockerell, 1909 | |
| Leiopodus singularis Linsley & Mi..., 1937 | Singular Chimney-bee-cuckoo |
| Martinapis (Martinapis) luteicornis Cockerell, 1896 | Yellow-horned Morning Long-horned Bee |
| Martinapis (Martinapis) occidentalis Zavortink & ..., 1976 | Western Morning Long-horned Bee |
| Melecta (Melecta) pacifica Cresson, 1878 | |
| Melecta (Melecta) separata Cresson, 1879 | |
| Melecta (Melectomimus) edwardsii Cresson, 1878 | Edward´s Melecta |
| Melecta bohartorum Linsley, 1939 | |
| Melecta thoracica Cresson, 1875 | |
| Melissodes (Apomelissodes) apicata Lovell & Coc..., 1906 | |
| Melissodes (Apomelissodes) fimbriata Cresson, 1878 | |
| Melissodes (Callimelissodes) ablusa Cockerell, 1926 | |
| Melissodes (Callimelissodes) coloradensis Cresson, 1878 | |
| Melissodes (Callimelissodes) composita Tucker, 1909 | |
| Melissodes (Callimelissodes) glenwoodensis Cockerell, 1905 | |
| Melissodes (Callimelissodes) lupina Cresson, 1878 | |
| Melissodes (Callimelissodes) lustra LaBerge, 1961 | |
| Melissodes (Callimelissodes) metenua Cockerell, 1924 | |
| Melissodes (Callimelissodes) nigracauda LaBerge, 1961 | |
| Melissodes (Callimelissodes) plumosa LaBerge, 1961 | |
| Melissodes (Callimelissodes) stearnsi Cockerell, 1905 | |
| Melissodes (Callimelissodes) tuckeri Cockerell, 1909 | |
| Melissodes (Eumelissodes) agilis Cresson, 1878 | Agile Long-horned Bee |
| Melissodes (Eumelissodes) bicolorata LaBerge, 1961 | |
| Melissodes (Eumelissodes) bidentis Cockerell, 1914 | |
| Melissodes (Eumelissodes) bimatris LaBerge, 1961 | |
| Melissodes (Eumelissodes) boltoniae Robertson, 1905 | Subterranean clover |
| Melissodes (Eumelissodes) brevipyga LaBerge, 1961 | |
| Melissodes (Eumelissodes) confusa Cresson, 1878 | |
| Melissodes (Eumelissodes) coreopsis Robertson, 1905 | Subterranean clover |
| Melissodes (Eumelissodes) denticulata Smith, 1854 | |
| Melissodes (Eumelissodes) dentiventris Smith, 1854 | |
| Melissodes (Eumelissodes) druriella Kirby, 1802 | |
| Melissodes (Eumelissodes) elegans LaBerge, 1961 | |
| Melissodes (Eumelissodes) expolita LaBerge, 1961 | |
| Melissodes (Eumelissodes) fasciatella LaBerge, 1961 | |
| Melissodes (Eumelissodes) fumosa LaBerge, 1961 | |
| Melissodes (Eumelissodes) gelida LaBerge, 1961 | |
| Melissodes (Eumelissodes) grindeliae Cockerell, 1898 | |
| Melissodes (Eumelissodes) humilior Cockerell, 1903 | |
| Melissodes (Eumelissodes) hymenoxidis Cockerell, 1906 | |
| Melissodes (Eumelissodes) illata Lovell & Coc..., 1906 | |
| Melissodes (Eumelissodes) limbus LaBerge, 1961 | |
| Melissodes (Eumelissodes) lutulenta LaBerge, 1961 | |
| Melissodes (Eumelissodes) manipularis Smith, 1854 | |
| Melissodes (Eumelissodes) menuachus Cresson, 1868 | |
| Melissodes (Eumelissodes) micheneri LaBerge, 1961 | |
| Melissodes (Eumelissodes) microsticta Cockerell, 1905 | |
| Melissodes (Eumelissodes) monoensis LaBerge, 1961 | |
| Melissodes (Eumelissodes) montana Cresson, 1878 | |
| Melissodes (Eumelissodes) moorei Cockerell, 1926 | |
| Melissodes (Eumelissodes) nivea Robertson, 1895 | |
| Melissodes (Eumelissodes) pallidisignata Cockerell, 1905 | |
| Melissodes (Eumelissodes) paulula LaBerge, 1961 | |
| Melissodes (Eumelissodes) perlusa Cockerell, 1925 | |
| Melissodes (Eumelissodes) personatella Cockerell, 1901 | |
| Melissodes (Eumelissodes) pullatella LaBerge, 1961 | |
| Melissodes (Eumelissodes) robustior Cockerell, 1915 | Robust Long-horned Bee |
| Melissodes (Eumelissodes) semilupina Cockerell, 1905 | |
| Melissodes (Eumelissodes) snowii Cresson, 1878 | |
| Melissodes (Eumelissodes) subagilis Cockerell, 1905 | |
| Melissodes (Eumelissodes) subillata LaBerge, 1961 | |
| Melissodes (Eumelissodes) submenuacha Cockerell, 1897 | |
| Melissodes (Eumelissodes) tincta LaBerge, 1961 | |
| Melissodes (Eumelissodes) trinodis Robertson, 1901 | Dark-Veined Longhorn |
| Melissodes (Eumelissodes) tristis Cockerell, 1894 | |
| Melissodes (Eumelissodes) utahensis LaBerge, 1961 | |
| Melissodes (Eumelissodes) verbesinarum Cockerell, 1905 | |
| Melissodes (Eumelissodes) vernalis LaBerge, 1961 | |
| Melissodes (Eumelissodes) vernoniae Robertson, 1902 | |
| Melissodes (Eumelissodes) wheeleri Cockerell, 1906 | |
| Melissodes (Heliomelissodes) desponsa Smith, 1854 | Thistle Long-horned Bee |
| Melissodes (Heliomelissodes) rivalis Cresson, 1872 | |
| Melissodes (Melissodes) bimaculata Lepeletier, 1825 | Longhorn Bee |
| Melissodes (Melissodes) blanda LaBerge, 1956 | |
| Melissodes (Melissodes) colliciata Cockerell, 1910 | |
| Melissodes (Melissodes) communis Cresson, 1878 | Common Long-horned Bee |
| Melissodes (Melissodes) comptoides Robertson, 1898 | Brown-winged Long-horned Bee |
| Melissodes (Melissodes) gilensis Cockerell, 1896 | |
| Melissodes (Melissodes) maesta LaBerge, 1956 | |
| Melissodes (Melissodes) tepaneca Cresson, 1878 | Tepanec Long-horned Bee |
| Melissodes (Melissodes) tepida Cresson, 1878 | |
| Melissodes (Melissodes) tessellata LaBerge, 1956 | |
| Melissodes (Melissodes) thelypodii Cockerell, 1905 | |
| Melissodes (Psilomelissodes) intorta Cresson, 1872 | |
| Melissodes (Tachymelissodes) dagosa Cockerell, 1909 | |
| Melissodes (Tachymelissodes) opuntiella Cockerell, 1911 | |
| Melissodes (Tachymelissodes) sphaeralceae Cockerell, 1896 | |
| Melissodes americana Lepeletier, 1841 | |
| Melissodes appressa LaBerge, 1961 | |
| Melissodes baileyi Cockerell, 1906 | |
| Melissodes cerussata LaBerge, 1961 | |
| Melissodes clarkiae LaBerge, 1961 | |
| Melissodes exilis LaBerge, 1961 | |
| Melissodes hurdi LaBerge, 1961 | |
| Melissodes intermedia (Cresson, 1872) | ⇒ Eucera intermedia Cresson, 1872 |
| Melissodes melanurus Cockerell, 1916 | |
| Melissodes minuscula LaBerge, 1961 | |
| Melissodes mitchelli LaBerge, 1956 | |
| Melissodes ochraea LaBerge, 1961 | |
| Melissodes parosetae Cockerell, 1905 | |
| Melissodes paucipuncta LaBerge, 1961 | |
| Melissodes pennsylvanica Lepeletier, 1841 | |
| Melissodes perpolita LaBerge, 1961 | |
| Melissodes pexa LaBerge, 1961 | |
| Melissodes philadelphica Lepeletier, 1841 | |
| Melissodes pilleata LaBerge, 1961 | |
| Melissodes relucens LaBerge, 1961 | |
| Melissodes rustica (Say, 1837) | ⇒ Melissodes druriella Kirby, 1802 |
| Melissodes saponellus Cockerell, 1908 | |
| Melissodes scotti Cockerell, 1939 | |
| Melissodes tribas LaBerge, 1961 | |
| Melissodes velutinus Cockerell, 1916 | |
| Melissoptila otomita Cresson, 1878 | |
| Melitoma grisella Cockerell & ..., 1899 | |
| Melitoma segmentaria Fabricius, 1804 | Hairy cockle |
| Melitoma taurea Say, 1837 | |
| Mesoplia (Mesoplia) dugesi Cockerell, 1917 | |
| Peponapis (Eopeponapis) michelbacherorum Hurd & Linsley, 1964 | |
| Peponapis (Eopeponapis) utahensis Cockerell, 1905 | |
| Peponapis (Peponapis) pruinosa Say, 1837 | Eastern cucurbit bee |
| Peponapis (Xenopeponapis) crassidentata Cockerell, 1949 | |
| Peponapis (Xenopeponapis) timberlakei Hurd & Linsley, 1964 | |
| Peponapis limitaris Cockerell, 1906 | |
| Ptilothrix bombiformis Cresson, 1878 | Hibiscus Bee |
| Ptilothrix sumichrasti Cresson, 1878 | |
| Simanthedon linsleyi Zavortink, 1975 | |
| Svastra (Anthedonia) compta Cresson, 1878 | |
| Svastra (Brachymelissodes) cressonii Dalla Torre, 1896 | |
| Svastra (Epimelissodes) aegis LaBerge, 1956 | |
| Svastra (Epimelissodes) atripes Cresson, 1872 | |
| Svastra (Epimelissodes) comanche Cresson, 1872 | |
| Svastra (Epimelissodes) grandissima Cockerell, 1905 | |
| Svastra (Epimelissodes) helianthelli Cockerell, 1905 | |
| Svastra (Epimelissodes) machaerantherae Cockerell, 1904 | |
| Svastra (Epimelissodes) obliqua Say, 1837 | Oblique Longhorn |
| Svastra (Epimelissodes) petulca Cresson, 1878 | |
| Svastra (Epimelissodes) sabinensis Cockerell, 1924 | |
| Svastra (Epimelissodes) texana Cresson, 1872 | |
| Svastra (Idiomelissodes) duplocincta Cockerell, 1905 | |
| Svastra pallidior LaBerge, 1963 | |
| Svastra sila LaBerge, 1956 | |
| Synhalonia acerba (Cresson, 1879) | ⇒ Eucera acerba Cresson, 1879 |
| Synhalonia actuosa (Cresson, 1878) | ⇒ Eucera actuosa Cresson, 1878 |
| Synhalonia albescens (Timberlake, 1969) | ⇒ Eucera albescens Timberlake, 1969 |
| Synhalonia amoenia Zavortink, 1982 | |
| Synhalonia amsinckiae (Timberlake, 1969) | ⇒ Eucera amsinckiae Timberlake, 1969 |
| Synhalonia angustifrons (Timberlake, 1969) | ⇒ Eucera angustifrons Timberlake, 1969 |
| Synhalonia aragalli Cockerell, 1904 | |
| Synhalonia argyrophila (Cockerell, 1909) | ⇒ Eucera argyrophila Cockerell, 1909 |
| Synhalonia atriventris (Smith, 1854) | ⇒ Eucera atriventris Smith, 1854 |
| Synhalonia bakeri (Timberlake, 1973) | ⇒ Eucera bakeri Timberlake, 1973 |
| Synhalonia belfragii Cresson, 1872 | |
| Synhalonia birkmanniella (Cockerell, 1906) | ⇒ Eucera birkmanniella Cockerell, 1906 |
| Synhalonia californica (Cresson, 1878) | ⇒ Eucera californica Cresson, 1878 |
| Synhalonia carinata Timberlake, 1961 | |
| Synhalonia carolinensis Dalla Torre, 1896 | |
| Synhalonia cercidis (Timberlake, 1969) | ⇒ Eucera cercidis Timberlake, 1969 |
| Synhalonia chrysobotryae (Cockerell, 1908) | ⇒ Eucera chrysobotryae Cockerell, 1908 |
| Synhalonia chrysophila (Cockerell, 1914) | ⇒ Eucera chrysophila Cockerell, 1914 |
| Synhalonia conformis (Timberlake, 1969) | ⇒ Eucera conformis Timberlake, 1969 |
| Synhalonia cordleyi (Viereck, 1905) | ⇒ Eucera cordleyi Viereck, 1905 |
| Synhalonia crenulaticornis Cockerell, 1898 | |
| Synhalonia cressoniana (Cockerell, 1905) | ⇒ Tetraloniella cressoniana Cockerell, 1905 |
| Synhalonia delphinii (Timberlake, 1969) | ⇒ Eucera delphinii Timberlake, 1969 |
| Synhalonia dorsata (Timberlake, 1969) | ⇒ Eucera dorsata Timberlake, 1969 |
| Synhalonia douglasiana (Cockerell, 1906) | ⇒ Eucera douglasiana Cockerell, 1906 |
| Synhalonia dubitata (Cresson, 1878) | ⇒ Eucera dubitata Cresson, 1878 |
| Synhalonia edwardsii (Cresson, 1878) | ⇒ Eucera edwardsii Cresson, 1878 |
| Synhalonia frater Cresson, 1878 | |
| Synhalonia fulvitarsis (Cresson, 1878) | ⇒ Eucera fulvitarsis Cresson, 1878 |
| Synhalonia fulvohirta (Cresson, 1878) | ⇒ Eucera fulvohirta Cresson, 1878 |
| Synhalonia fuscotincta (Cockerell, 1905) | ⇒ Tetraloniella crenulaticornis Cockerell, 1898 |
| Synhalonia hamata (Bradley, 1942) | ⇒ Eucera hamata Bradley, 1942 |
| Synhalonia hirsutissima (Cockerell, 1916) | ⇒ Eucera hirsutissima Cockerell, 1916 |
| Synhalonia hurdi (Timberlake, 1969) | ⇒ Eucera hurdi Timberlake, 1969 |
| Synhalonia illinoensis (Robertson, 1902) | ⇒ Eucera illinoensis Robertson, 1902 |
| Synhalonia lepida (Cresson, 1878) | ⇒ Eucera lepida Cresson, 1878 |
| Synhalonia lunata (Timberlake, 1969) | ⇒ Eucera lunata Timberlake, 1969 |
| Synhalonia lutziana (Cockerell, 1933) | ⇒ Eucera lutziana Cockerell, 1933 |
| Synhalonia lycii (Cockerell, 1897) | ⇒ Eucera lycii Cockerell, 1897 |
| Synhalonia mohavensis (Timberlake, 1969) | ⇒ Eucera mohavensis Timberlake, 1969 |
| Synhalonia monozona (Timberlake, 1969) | ⇒ Eucera monozona Timberlake, 1969 |
| Synhalonia pagosana (Cockerell, 1925) | ⇒ Eucera pagosana Cockerell, 1925 |
| Synhalonia pallidihirta (Timberlake, 1969) | ⇒ Eucera pallidihirta Timberlake, 1969 |
| Synhalonia phaceliae (Cockerell, 1911) | ⇒ Eucera phaceliae Cockerell, 1911 |
| Synhalonia primaveris Timberlake, 1969 | |
| Synhalonia quadricincta (Timberlake, 1969) | ⇒ Eucera quadricincta Timberlake, 1969 |
| Synhalonia rosae (Robertson, 1900) | ⇒ Eucera rosae Robertson, 1900 |
| Synhalonia speciosa Cresson, 1878 | |
| Synhalonia stretchii (Cresson, 1878) | ⇒ Eucera stretchii Cresson, 1878 |
| Synhalonia suavis (Cresson, 1878) | ⇒ Eucera suavis Cresson, 1878 |
| Synhalonia texana (Timberlake, 1969) | ⇒ Eucera texana Timberlake, 1969 |
| Synhalonia tricinctella (Timberlake, 1969) | ⇒ Eucera tricinctella Timberlake, 1969 |
| Synhalonia truttae (Cockerell, 1905) | ⇒ Eucera truttae Cockerell, 1905 |
| Synhalonia venusta (Timberlake, 1961) | ⇒ Eucera venusta Timberlake, 1961 |
| Synhalonia virgata Cockerell, 1905 | |
| Synhalonia zonata (Timberlake, 1969) | ⇒ Eucera zonata Timberlake, 1969 |
| Syntrichalonia exquisita Cresson, 1878 | Exquisite Long-horned Bee |
| Tetraloniella (Tetraloniella) albata Cresson, 1872 | |
| Tetraloniella (Tetraloniella) arizonica Cockerell, 1937 | |
| Tetraloniella (Tetraloniella) crenulaticornis Cockerell, 1898 | |
| Tetraloniella (Tetraloniella) davidsoni Cockerell, 1905 | |
| Tetraloniella (Tetraloniella) eriocarpi Cockerell, 1898 | |
| Tetraloniella (Tetraloniella) helianthorum Cockerell, 1914 | |
| Tetraloniella (Tetraloniella) imitatrix Cockerell & ..., 1899 | |
| Tetraloniella (Tetraloniella) lippiae Cockerell, 1904 | |
| Tetraloniella (Tetraloniella) pomonae Cockerell, 1915 | |
| Tetraloniella (Tetraloniella) spissa Cresson, 1872 | |
| Tetraloniella bishoppi Cockerell, 1914 | |
| Tetraloniella cressoniana Cockerell, 1905 | |
| Tetraloniella excurrens Cockerell, 1903 | |
| Tetraloniella fasciatella LaBerge, 1970 | |
| Tetraloniella gutierreziae Cockerell, 1905 | |
| Tetraloniella habrocoma Cockerell, 1935 | |
| Tetraloniella neotomae Cockerell, 1906 | |
| Tetraloniella pallidicauda Cockerell, 1934 | |
| Tetraloniella parksi Cockerell, 1935 | |
| Tetraloniella pimella Cockerell, 1906 | |
| Tetraloniella wilmattae Cockerell, 1917 | |
| Xenoglossa (Euxenoglossa) kansensis Cockerell, 1905 | Kansas Squash Bee |
| Xenoglossa (Euxenoglossa) strenua Cresson, 1878 | |
| Xenoglossa (Xenoglossa) angustior Cockerell, 1899 | |
| Xenoglossa (Xenoglossa) gabbii Cresson, 1878 | |
| Xenoglossa (Xenoglossa) patricia Cockerell, 1896 | |
| Xeromelecta (Melectomorpha) californica Cresson, 1878 | California Xeromelecta |
| Xeromelecta (Melectomorpha) interrupta Cresson, 1872 | Interrupted Xeromelecta |
| Xeromelecta (Xeromelecta) larreae Cockerell, 1900 | Larrea Xeromelecta |
| Zacosmia maculata Cresson, 1879 | |
