Diaeretus essigellae (Hymenoptera : Braconidae), a new species parasitic on Essigella pine aphids (Homoptera : Aphididae) from California

摘要

Diaeretus essigellae n.sp., an aphidiine parasitoid reared from Essigella californica ( Essig) on Pinus spp. from California, is described. The new species is distinguished from other Nearctic aphidiines by its reduced fore wing enation and the absence of notauli, propodeal carinae and prongs on the female hypopygium. Diaeretus essigellae may be I useful biocontrol agent against E. californica in other countries.