Trypoxylon collinum is a species of square-headed wasp in the family Crabronidae.

[1][2][3][4] It is found in North America.

[1] It nests inside hollow tubes.

These two subspecies belong to the species Trypoxylon collinum: Data sources: i = ITIS,[1] c = Catalogue of Life,[2] g = GBIF,[3] b = Bugguide.net[4]

This Apoidea-related article is a stub.