Genus: Euaspis Gerstäcker, 1857
Common name: none
(modified from Michener 2007)
Euaspis can resemble some species of Pachyanthidium, which may also have a black head and thorax and red abdomen, as well as a similar flat and produced scutellum (Michener 2007). Euaspis can be readily distinguished by the presence of juxtantennal carina and a raised median ridge from the frons to the supraclypeal area (Michener 2007).
There are no known invasives.
Euaspis nesting behavior is unique when compared to other cleptoparasitic bees, in that the adult removes the existing egg or larvae from their host’s nest instead of the cleptoparasitic larvae killing the host. Euaspis have been known to wait until their host builds its nest, lays its eggs, and closes its nest cells. Euaspis then bores into the closed cell and throws out any of the host’s larvae living in the cell. It is believed Euaspis eat any eggs found in the nest since eggs are not thrown out of the nest. The Euaspis adult then gathers any scattered pollen together in each cell and lays her egg on the pollen mass. She then closes the hole bored in the cell with resin or pollen (Iwata 1976).
Euaspis is widespread in sub-Saharan Africa, and from Pakistan to eastern and southeastern Asia. Of the 12 species, 2 are from Africa, and 10 are from Asia (Michener 2007).