Notes on the classification of certain colletid bees (Hymenoptera: Colletidae)

Sundry descriptive taxonomic accounts are presented for colletid bees in the Diphaglossinae, Paracolletinae, and Euryglossinae. The following new taxa are established: Ptiloglossium , gen. n. (Diphaglossinae: Dissoglottini); Trichocolletini , tribe n., and Anthoglossini , tribe n. (Para colletinae); Pachyprosopini , tribe n. (Euryglossinae); Stichohesma , gen. n., Dolichohesma , gen. n., and Exleyhesma , gen. n. (Euryglossinae: Euryglossini).