| Epeolus americanus Cresson, 1878 | |
| Epeolus autumnalis Robertson, 1902 | Autumnal Cellophane-Cuckoo |
| Epeolus bifasciatus Cresson, 1864 | Two-Banded Cellophane-Cuckoo |
| Epeolus canadensis Mitchell, 1962 | Canadian Cellophane-Cuckoo Bee |
| Epeolus compactus Cresson, 1878 | |
| Epeolus gabrielis Cockerell, 1909 | |
| Epeolus interruptus Robertson, 1900 | |
| Epeolus lanhami Mitchell, 1962 | |
| Epeolus lectoides Robertson, 1901 | Knotted clover |
| Epeolus mercatus Fabricius, 1804 | Aleutian macoma |
| Epeolus minimus Robertson, 1902 | Least Cellophane-Cuckoo Bee |
| Epeolus pusillus Cresson, 1864 | Dwarf Cellophane-Cuckoo Bee |
| Epeolus scutellaris Say, 1824 | Notch-Backed Cellophane-Cuckoo Bee |
| Holcopasites calliopsidis Linsley, 1943 | Calliopsis Cuckoo Nomad Bee |
| Holcopasites eamia Cockerell, 1909 | |
| Holcopasites heliopsis Robertson, 1897 | |
| Holcopasites illinoiensis Robertson, 1891 | |
| Holcopasites stevensi Crawford, 1915 | |
| Nomada (Gnathias) bella Cresson, 1863 | Belle Nomad Bee |
| Nomada (Nomada) annulata Smith, 1854 | |
| Nomada (Nomada) banksi Cockerell, 1907 | Banks' Nomad Bee |
| Nomada (Nomada) denticulata Robertson, 1902 | Denticulate Nomad |
| Nomada (Nomada) parva Robertson, 1900 | Small Cuckoo Nomad Bee |
| Nomada (Nomada) sulphurata Smith, 1854 | |
| Nomada (Nomada) vicina Cresson, 1863 | Neighborly Nomad |
| Nomada (Nomadita) placida Cresson, 1863 | |
| Nomada affabilis Cresson, 1878 | |
| Nomada arenicola Swenk, 1913 | |
| Nomada armatella Cockerell, 1903 | Armed Cuckoo Nomad Bee |
| Nomada articulata Smith, 1854 | Articulated Nomad |
| Nomada australis Mitchell, 1962 | Austral Cuckoo Nomad Bee |
| Nomada autumnalis Mitchell, 1962 | |
| Nomada belfragei Cresson, 1878 | |
| Nomada besseyi Swenk, 1913 | |
| Nomada bethunei Cockerell, 1903 | Bethune'S Cuckoo Nomad Bee |
| Nomada binotata Robertson, 1903 | |
| Nomada bisignata Say, 1824 | |
| Nomada capitalis Mitchell, 1962 | |
| Nomada colorata Mitchell, 1962 | |
| Nomada composita Mitchell, 1962 | Composite Cuckoo Nomad Bee |
| Nomada cressonii Morawitz, 1877 | Cresson'S Nomad |
| Nomada crotchii Cresson, 1878 | |
| Nomada cuneata Robertson, 1903 | Cuneate Cuckoo Nomad Bee |
| Nomada decepta Mitchell, 1962 | |
| Nomada dentariae Robertson, 1903 | |
| Nomada depressa Cresson, 1863 | Depressed Cuckoo Nomad Bee |
| Nomada dreisbachi Mitchell, 1962 | |
| Nomada edwardsii Cresson, 1878 | Edwards´ Nomad Bee |
| Nomada florilega Lovell & Coc..., 1905 | Flower Cuckoo Nomad Bee |
| Nomada grandis Cresson, 1875 | |
| Nomada heiligbrodtii (Cresson, 1878) | ⇒ Nomada texana Cresson, 1872 |
| Nomada hemphilli Cockerell, 1903 | |
| Nomada illinoensis (Robertson, 1900) | ⇒ Nomada illinoiensis Robertson, 1900 |
| Nomada imbricata Smith, 1854 | Imbricate Cuckoo Nomad Bee |
| Nomada lehighensis Cockerell, 1903 | Lehigh Gap Cuckoo Nomad Bee |
| Nomada lepida Cresson, 1863 | Charming Cuckoo Nomad Bee |
| Nomada luteoloides (Robertson, 1895) | ⇒ Nomada sulphurata Smith, 1854 |
| Nomada maculata Cresson, 1863 | Spotted Nomad Bee |
| Nomada media Mitchell, 1962 | |
| Nomada minima Mitchell, 1962 | |
| Nomada obliterata Cresson, 1863 | Obliterated Cuckoo Nomad Bee |
| Nomada ochlerata Mitchell, 1962 | |
| Nomada ovata Robertson, 1903 | Orange-Tailed Nomad |
| Nomada perplexa Cresson, 1863 | |
| Nomada pseudops (Cockerell, 1905) | ⇒ Nomada bethunei Cockerell, 1903 |
| Nomada pygmaea Cresson, 1863 | Pygmy Cuckoo Nomad Bee |
| Nomada rubi Swenk, 1915 | |
| Nomada rubicunda Olivier, 1811 | Littleleaf mockorange |
| Nomada sayi Robertson, 1893 | |
| Nomada sobrina Mitchell, 1962 | |
| Nomada sphaerogaster Cockerell, 1903 | |
| Nomada subrubi Swenk, 1915 | |
| Nomada subrutila Lovell & Coc..., 1905 | |
| Nomada superba Cresson, 1863 | Superb Nomada |
| Nomada texana Cresson, 1872 | Texas Nomad Bee |
| Nomada tiftonensis Cockerell, 1903 | Tifton Nomad Bee |
| Nomada utahensis Moalif, 1988 | Utah Nomada |
| Nomada vincta Say, 1837 | Bounded Cuckoo Nomad Bee |
| Nomada wisconsinensis (Graenicher, 1911) | ⇒ Nomada fervida Smith, 1854 |
| Triepeolus concavus (Cresson, 1878) | ⇒ Doeringiella concava |
| Triepeolus donatus Smith, 1854 | Thistle Longhorn-Cuckoo |
| Triepeolus eliseae Rightmyer, 2017 | |
| Triepeolus helianthi Robertson, 1897 | Sunflower Cuckoo Nomad Bee |
| Triepeolus lunatus Say, 1824 | |
| Triepeolus michiganensis Mitchell, 1962 | Michigan Cuckoo Nomad Bee |
| Triepeolus nevadensis Cresson, 1878 | |
| Triepeolus obliteratus Graenicher, 1911 | |
| Triepeolus occidentalis Cresson, 1878 | |
| Triepeolus pectoralis Robertson, 1897 | Goldenrod Longhorn-Cuckoo Bee |
| Triepeolus quadrifasciatus Say, 1823 | |
| Triepeolus remigatus Fabricius, 1804 | Hairy cockle |
| Triepeolus utahensis Cockerell, 1921 | |
