EARWIG PARASITOIDS OF THE GENUS TRIARTHRIA STEPHENS (DIPTERA, TACHINIDAE) IN THE NEW WORLD

摘要

Triarthria Stephens is known from two species in the New World. One is T. seripennis (Fallen), introduced into North America from Europe early this century as a biological control agent against its host, the European earwig (Forficula auricularia L.) (Dermaptera: Forficulidae). The second species is T. parva (Townsend), a widely distributed earwig (Doru spp.) parasitoid in the Neotropical region. Triarthria parva was originally described in the monotypic genus Parkerella Townsend; Parkerella is newly synonymized with Triarthria (syn.nov.), and T. parva is a new combination (comb.nov.). The genus Triarthria is diagnosed and the four included species are keyed: T. legeri (Villeneuve) (western Palearctic region), T. tienshanensis Ziegler (Uzbekistan), T. seripennis, and T. parva. The two species in the New World are diagnosed, illustrated, and their known distributions mapped.