Bc. Kondratieff et Sj. Fitzgerald, A NEW SPECIES OF SPHECOMYIELLA (DIPTERA, PYRGOTIDAE) FROM NORTH-AMERICA, Proceedings of the Entomological Society of Washington, 95(4), 1993, pp. 554-557
Sphecomyiella nelsoni n. sp. is described from Arizona, and is disting
uished from S. valida (Harris) by the shape of the epandrium of the ma
le and the apex of the ovipositor of the female; both species are illu
strated for comparison. A holotype male and 40 paratypes are designate
d.