Including all specimens from the Araba Bioscan and Black Mountain Litter projects.
Specimens of Callohesma Michener, 1965
unranked: Biota
kingdom: Animalia
phylum: Arthropoda
class: Insecta
order: Hymenoptera
superfamily: Apoidea
family: Colletidae
subfamily: Euryglossinae
genus: Callohesma Michener, 1965