''Macrocalymma'' is an Australian genus of
potter wasp
Potter wasps (or mason wasps), the Eumeninae, are a Cosmopolitan distribution, cosmopolitan wasp group currently considered a subfamily of Vespidae, but sometimes recognized in the past as a separate family, Eumenidae.
Mud dauber wasps, which al ...
s.
References
Biological pest control wasps
Potter wasps
Taxa named by Robert Cyril Layton Perkins
{{Potter-wasp-stub