Acanthostethus basalis is the single known Tasmanian nyssonine. The densely punctate, short-haired, body and the antennae gradually inflating to their apices easily distinguishes the species from other Tasmanian crabronids. Acanthostethus are presumed to parasitise Sericophorus spp. (Crabronidae).
Male
Late December 2018
Buckland
Body length just over 6mm.
