| Anthophora (Clisodon) furcata Panzer, 1798 | Fork Tailed Flower Bee |
| Anthophora (Clisodon) terminalis Cresson, 1869 | Orange-Tipped Wood-Digger Bee |
| Anthophora (Lophanthophora) ursina Cresson, 1869 | |
| Anthophora (Melea) bomboides Kirby, 1837 | Bumble-bee-mimic Anthophora |
| Anthophora (Mystacanthophora) montana Cresson, 1869 | Rocky Mountain Anthophora |
| Anthophora (Mystacanthophora) urbana Cresson, 1878 | |
| Apis (Apis) mellifera Linnaeus, 1758 | Drone-Bee |
| Bombus (Alpinobombus) balteatus Dahlbom, 1832 | Baltic bumblebee |
| Bombus (Bombias) auricomus Robertson, 1903 | Black and gold bumble bee |
| Bombus (Bombus) affinis Cresson, 1863 | Rusty patch bumble bee |
| Bombus (Bombus) nevadensis Cresson, 1874 | Nevada bumble bee |
| Bombus (Bombus) occidentalis (Greene, 1858) | ⇒ Bombus terricola Kirby, 1837 |
| Bombus (Bombus) terrestris (Linnaeus, 1758) | ⇒ Bombus longipennis Friese, 1918 |
| Bombus (Bombus) terricola Kirby, 1837 | Yellow-banded Bumble Bee |
| Bombus (Cullumanobombus) rufocinctus Cresson, 1863 | Red-belted Bumble Bee |
| Bombus (Fervidobombus) fervidus Fabricius, 1798 | Golden Northern Bumble Bee |
| Bombus (Fervidobombus) pensylvanicus De Geer, 1773 | American bumble bee |
| Bombus (Fervidobombus) sonorus (Say, 1837) | ⇒ Bombus pensylvanica De Geer, 1773 |
| 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) fernaldae (Franklin, 1911) | ⇒ Bombus flavidus Eversmann, 1852 |
| Bombus (Psithyrus) insularis (Smith, 1861) | ⇒ Bombus hypnorum Linnaeus, 1758 |
| Bombus (Psithyrus) variabilis (Cresson, 1872) | ⇒ Bombus humilis Illiger, 1806 |
| Bombus (Pyrobombus) bimaculatus Cresson, 1863 | Two-spotted 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) huntii Greene, 1860 | Hunt bumble bee |
| Bombus (Pyrobombus) impatiens Cresson, 1863 | Common eastern bumble bee |
| Bombus (Pyrobombus) perplexus (Cresson, 1863) | ⇒ Bombus soroeensis Fabricius, 1776 |
| Bombus (Pyrobombus) sandersoni Franklin, 1913 | Sanderson 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) 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) borealis Kirby, 1837 | Northern amber bumble bee |
| Bombus fervidas | Golden Northern Bumble Bee |
| Bombus monardae (Cockerell & ..., 1899) | ⇒ Bombus centralis Cresson, 1864 |
| Bombus pennsylvanicus (De Geer, 1773) | ⇒ Bombus pensylvanica De Geer, 1773 |
| Bombus prunellae (Cockerell & ..., 1899) | ⇒ Bombus rufocinctus Cresson, 1863 |
| Bombus sg | |
| Centris (Wagenknechtia) cineraria Smith, 1854 | |
| Ceratina (Zadontomerus) calcarata Robertson, 1900 | Spurred Carpenter Bee |
| Ceratina (Zadontomerus) dupla (Say, 1837) | ⇒ Ceratina floridana Mitchell, 1962 |
| Ceratina mikmaqi Rehan & Shef..., 2011 | Mikmaq Little Carpenter Bee |
| Diadasia (Coquillettapis) diminuta Cresson, 1878 | |
| Diadasia (Coquillettapis) sphaeralcearum Cockerell, 1905 | |
| Elaphropoda bembidion Lieftinck, 1966 | Cascade cave amphipod |
| Epeoloides pilosula (Cresson, 1878) | ⇒ Epeoloides pilosulus Cresson, 1878 |
| Epeolus bifasciatus Cresson, 1864 | Two-Banded Cellophane-Cuckoo |
| Epeolus pusillus Cresson, 1864 | Dwarf Cellophane-Cuckoo Bee |
| Epeolus scutellaris Say, 1824 | Notch-Backed Cellophane-Cuckoo Bee |
| Habropoda laboriosa Fabricius, 1804 | Blueberry Habropoda |
| Holcopasites calliopsidis Linsley, 1943 | Calliopsis Cuckoo Nomad Bee |
| Melissodes (Callimelissodes) lupina Cresson, 1878 | |
| Melissodes (Eumelissodes) agilis Cresson, 1878 | Agile Long-horned Bee |
| Melissodes (Eumelissodes) brevipyga LaBerge, 1961 | |
| Melissodes (Eumelissodes) confusa Cresson, 1878 | |
| Melissodes (Eumelissodes) denticulata Smith, 1854 | |
| Melissodes (Eumelissodes) druriella Kirby, 1802 | |
| Melissodes (Eumelissodes) hymenoxidis Cockerell, 1906 | |
| Melissodes (Eumelissodes) illata Lovell & Coc..., 1906 | |
| Melissodes (Eumelissodes) subillata LaBerge, 1961 | |
| Melissodes (Eumelissodes) trinodis Robertson, 1901 | Dark-Veined Longhorn |
| Melissodes (Eumelissodes) tristis Cockerell, 1894 | |
| Melissodes (Eumelissodes) utahensis LaBerge, 1961 | |
| Melissodes (Heliomelissodes) desponsa Smith, 1854 | Thistle Long-horned Bee |
| Melissodes (Melissodes) bimaculata Lepeletier, 1825 | Longhorn Bee |
| Melissodes (Tachymelissodes) dagosa Cockerell, 1909 | |
| Melissodes saponellus Cockerell, 1908 | |
| Nomada (Gnathias) bella Cresson, 1863 | Belle Nomad Bee |
| Nomada (Nomada) gracilis Cresson, 1863 | Slender Cuckoo Nomad Bee |
| Nomada (Nomada) integerrima Dalla Torre, 1896 | |
| Nomada (Nomada) vicina Cresson, 1863 | Neighborly Nomad |
| Nomada aquilarum Cockerell, 1903 | |
| Nomada armatella Cockerell, 1903 | Armed Cuckoo Nomad Bee |
| Nomada articulata Smith, 1854 | Articulated Nomad |
| Nomada australis Mitchell, 1962 | Austral Cuckoo Nomad Bee |
| Nomada bethunei Cockerell, 1903 | Bethune'S Cuckoo Nomad Bee |
| Nomada cressonii Morawitz, 1877 | Cresson'S Nomad |
| Nomada cuneata Robertson, 1903 | Cuneate Cuckoo Nomad Bee |
| Nomada depressa Cresson, 1863 | Depressed Cuckoo Nomad Bee |
| Nomada detrita Mitchell, 1962 | |
| Nomada electa Cresson, 1863 | |
| Nomada fervida Smith, 1854 | |
| Nomada florilega Lovell & Coc..., 1905 | Flower Cuckoo Nomad Bee |
| Nomada illinoensis (Robertson, 1900) | ⇒ Nomada illinoiensis Robertson, 1900 |
| Nomada imbricata Smith, 1854 | Imbricate Cuckoo Nomad Bee |
| Nomada inepta (Mitchell, 1962) | ⇒ Nomada gracilis Cresson, 1863 |
| Nomada lehighensis Cockerell, 1903 | Lehigh Gap Cuckoo Nomad Bee |
| Nomada lepida Cresson, 1863 | Charming Cuckoo Nomad Bee |
| Nomada louisianae Cockerell, 1903 | |
| Nomada luteoloides (Robertson, 1895) | ⇒ Nomada sulphurata Smith, 1854 |
| Nomada maculata Cresson, 1863 | Spotted Nomad Bee |
| Nomada media Mitchell, 1962 | |
| Nomada ovata Robertson, 1903 | Orange-Tailed Nomad |
| Nomada pygmaea Cresson, 1863 | Pygmy Cuckoo Nomad Bee |
| Nomada sayi Robertson, 1893 | |
| Nomada texana Cresson, 1872 | Texas Nomad Bee |
| Nomada valida Smith, 1854 | True Cuckoo Nomad Bee |
| Peponapis (Peponapis) pruinosa Say, 1837 | Eastern cucurbit bee |
| Tetraloniella (Tetraloniella) crenulaticornis Cockerell, 1898 | |
| Triepeolus donatus Smith, 1854 | Thistle Longhorn-Cuckoo |
| Triepeolus lunatus Say, 1824 | |
| Triepeolus pectoralis Robertson, 1897 | Goldenrod Longhorn-Cuckoo Bee |
| Triepeolus townsendi Cockerell, 1907 | |
| Xenoglossa (Xenoglossa) angustior Cockerell, 1899 | |
| Xeromelecta (Melectomorpha) californica Cresson, 1878 | California Xeromelecta |
| Xeromelecta (Melectomorpha) interrupta Cresson, 1872 | Interrupted Xeromelecta |
| Xylocopa (Neoxylocopa) brasilianorum Linnaeus, 1767 | Arnold's dogwood |
| Xylocopa (Schonnherria) splendidula Lepeletier, 1841 | |
| Xylocopa (Xylocopoides) californica Cresson, 1864 | California carpenter bee |
| Xylocopa (Xylocopoides) virginica Linnaeus, 1771 | Carpenter bee |
