Silver-bodied
Guides
Efferia argyrosoma
Efferia argyrosoma is a species of robber fly (family Asilidae) described by Hine in 1911. The genus Efferia represents one of the most diverse and widespread groups of robber flies in North America, with species typically characterized by their predatory behavior and distinctive male genitalia. As a member of the subfamily Asilinae, E. argyrosoma shares the general robust body form and predatory habits typical of this group. The specific epithet 'argyrosoma' refers to the silvery or argent body coloration characteristic of this species.