This list has been extracted from Francis Evans’ ESGR bee database. The database lists hosts, dates of capture, activity, etc. It is invaluable for anyone wishing to evaluate long-term faunal studies, bee-flowering plant interactions, etc.
Colletidae
- Colletes americanus Cresson
- Colletes compactus Cresson
- Colletes inaequalis Say
- Colletes latitarsis Robertson
- Colletes nudus Robertson
- Colletes simulans armatus Patton
- Colletes solidaginis Swenk
- Colletes validus Cresson
- Hylaeus (Prosopis) affinis (Smith)
- Hylaeus (Hylaeus) cressoni (Cockerell)
- Hylaeus (Prosopis) ? modestus Say
Andrenidae
- Andrena (Scrapteropsis) alleghaniensis Viereck
- Andrena (Melandrena) barbara Bouseman & LaBerge
- Andrena (Conandrena) bradleyi Viereck
- Andrena (Cnemidandrena) canadensis Dalla Torre
- Andrena (Melandrena) carlini Cockerell
- Andrena (Gymnandrena) ceanothi Viereck
- Andrena (Melandrena) commoda Smith
- Andrena (Plastandrena) crataegi Robertson
- Andrena (Opandrena) cressonii Robertson
- Andrena (Trachandrena) forbesii Robertson
- Andrena (Gonandrena) fragilis Smith
- Andrena (Cnemidandrena) hirticincta Provancher
- Andrena (Scrapteropsis) imitatrix Cresson
- Andrena (Andrena) mandibularis Robertson
- Andrena (Micrandrena) melanochroa Cockerell
- Andrena (Trahandrena) miranda Smith
- Andrena (Larandrena) miserabilis Cresson
- Andrena (Simandrena) nasonii Robertson
- Andrena (Gonandrena) nigrifrons Cresson
- Andrena (Melandrena) nivalis Smith
- Andrena (Cnemidandrena) nubecula Smith
- Andrena (Tylandrena) perplexa Smith
- Andrena (Callandrena) placata Mitchell
- Andrena (Rhacandrena) robertsonii (Dalla Torre)*
- Andrena (Callandrena) rudbeckiae Robertson
- Andrena (Trachandrena) rugosa Robertson
- Andrena (Micrandrena) salictaria Robertson
- Andrena (Trachandrena) sigmundi Cockerell
- Andrena (Melandrena) vicina Smith
- Andrena (Taeniandrena) wilkella (Kirby)
- Pseudopanurgus (Heterosarus) nebrascensis (Crawford)
- Calliopsis (Calliopsis) andreniformis Smith
- Perdita (Cockerellia) bequaerti indianensis Cockerell
- Perdita (Perdita) ? octomaculata (Say)
- *This is probably brevipalpis Cockerell (cf. LaBerge, 1977).
Halictidae
- Halictus (Seladonia) confusus Smith
- Halictus (Halictus) ligatus Say
- Halictus (Halictus) parallelus Say
- Halictus (Halictus) rubicundus Christ
- Lasioglossum coriaceum (Smith)
- Lasioglossum forbesii (Robertson)
- Lasioglossum leucozonium (Schrank)
- Evylaeus cinctipes (Provancher)
- Evylaeus foxii (Robertson)
- Evylaeus nelumbonis (Robertson)
- Evylaeus oenotherae (Stevens)
- Evylaeus pectoralis (Smith)
- Dialictus anomalus (Robertson)
- Dialictus bruneri (Crawford)
- Dialictus coeruleus (Robertson)
- Dialictus cressonii (Robertson)
- Dialictus illinoensis (Robertson)
- Dialictus imitatus (Smith)
- Dialictus laevissimus (Smith)
- Dialictus lineatulus (Crawford)
- Dialictus nymphaearum (Robertson)
- Dialictus perpunctatus (Ellis)
- Dialictus pictus (Crawford)
- Dialictus pilosus pilosus (Smith)
- Dialictus supraclypeatus Mitchell
- Dialictus tegularis (Robertson)
- Dialictus vierecki (Crawford)
- Agapostermon radiatus (Say)
- Apagostermon splendens (Lepeletier)
- Apagostermon texanus Cresson
- Apagostermon virescens (Fabricius)
- Augochlora pura (Say)
- Augochlorella striata (Provancher)
- Augochloropsis metallica (Smith)
- Sphecodes confertus Say
- Sphecodes cressonii (Robertson)
- Sphecodes dayisii Robertson
- Sphecodes dichrous Smith
- Sphecodes heraclei Robertson
- Sphecodes illinoensis (Robertson)
- Sphecodes knetschi Cockerell
- Sphecodes persimilis Lovell & Cockerell
- Sphecodes ranunculi Robertson
- Sphecodes stygius Robertson
- Dufourea (Halictoides) monardae (Viereck)
Megachilidae
- Heriades (Physostetha) carinata Cresson
- Heriades (Neotrypetes) leavitti Crawford
- Hoplitis (Monumetha) albifrons (Kirby)
- Hoplitis (Andronicus) cylindrica (Cresson)
- Hoplitis (Alcidamea) pilosifrons (Cresson)
- Hoplitis (Alcidamea) products (Cresson)
- Osmia (Chenosmia) atriventris Cresson
- Osmia (Nothosmia) distincta Cresson
- Osmia (Chalcosmia) georgica Cresson
- Osmia (Osmia) lignaria Say
- Osmia (Nothosmia) pumila Cresson
- Osmia (Monilosmia) simillima Smith
- Osmia (Chalcosmia) texana Cresson
- Megachile (Delomegachile) addenda Cresson
- Megachile (Acentron) albitarsis Cresson
- Megachile (Litomegachile) brevis brevis Say
- Megachile (Chelostomoides) campanulae (Robertson)
- Megachile (Sayapis) frugalis Cresson
- Megachile (Megachile) inermis Provancher
- Megachile (Xanthorsarus) latimanus Say
- Megachile (Litomegachile) mendica Cresson
- Megachile (Megachile) montivaga Cresson
- Megachile (Sayapis) pugnata Say
- Megachile (Megachile) relativa Cresson
- Megachile (Litomegachile) texana Cresson
- Coelioxys alternata Say
- Coelioxys modesta Smith
- Coelioxys 8-dentata Say
- Coelioxys rufitarsis Smith
Anthophoridae
- Melissodes (Melissodes) communis Cresson
- Melissodes (Melissodes) comptoides Robertson
- Melissodes (Eumelissodes) dentiventris Smith
- Melissodes (Heliomelissodes) desponsa Smith
- Melissodes (Eumelissodes) nivea Robertson
- Melissodes (Eumelissodes) rustica (Say)
- Melissodes (Eumelissodes) subillata LaBerge
- Melissodes (Eumelissodes) tincta LaBerge
- Melissodes (Eumelissodes) wheeleri Cockerell
- Anthophora (Anthophora) abrupta Say
- Anthophora (Clisodon) furcata terminalis Cresson
- Anthophora (Amegilla) walshii Cresson
- Nomada (Nomada) armatella Cockerell
- Nomada (Nomadula) articulata Smith
- Nomada (Heminomada) bishoppi Cockerell
- Nomada (Heminomada) colorata Mitchell
- Nomada (Nomada) cressonii Robertson
- Nomada (Gnathias) cuneata (Robertson)
- Nomada (Gnathias) maculata Cresson
- Nomada (Gnathias) perplexa Cresson
- Nomada (Nomada) pygmaea Cresson
- Nomada (Nomada) ? sayi Robertson
- Nomada (Heminomada) subrutila Lovell & Cockerell
- Nomada (Nomada) vicina Cresson
- Nomada (Pachynomada) vincta Say
- Epeolus bifasciatus Cresson
- Epeolus ?interruptus Robertson
- Epeolus lanhami Mitchell
- Epeolus pusillus Cresson
- Epeolus scutellaris Say
- Triepeolus cirsiasnus Mitchell
- Triepelous ?michiganensis Mitchell
- Triepeolus simplex Robertson
- Holcopasites (Holcopasites) calliopsidis (Linsley)
Xylocopidae
- Ceratina (Zadontomerus) calcarata Robertson
- Ceratina (Zadontomerus) dupla dupla Say
- Xylocopa (Xylocopoides) virginica (Linnaeus)
Apidae
- Bombus affinis Cresson
- Bombus bimaculatus Cresson
- Bombus borealis Kirby
- Bombus fervidus (Fabricius)
- Bombus griseocollis (DeGeer)
- Bombus impatiens Cresson
- Bombus nevadensis Cresson
- Bombus pennsylvanicus (DeGeer)
- Bombus perplexus Cresson
- Bombus terricola Kirby
- Bombus vagans Smith
- Psithyrus ashtoni (Cresson)
- Psithyrus citrinus (Smith)
- Psithyrus fernaldae Franklin
- Apis mellifera Linnaeus