H. Hippa et Fc. Thompson, REVISION OF THE STERPHUS-CYBELE SPECIES GROUP (DIPTERA, SYRPHIDAE), Proceedings of the Entomological Society of Washington, 96(3), 1994, pp. 483-495
The Sterphus cybele species group is revised and four new species are
described: janzeni Thompson (Costa Rica & Panama); calypso Hippa (Boli
via); cydippe Hippa (Columbia); and venezuelaensis Thompson (Venezuela
). The phylogenetic relationships among these are venezuelaensis + ((c
ybele + janzeni) + (calypso + cydippe)). A new key to the species of S
terphus is given.