The GenusPriotomisin Argentina(Hymenoptera, Ichneumonidae)

[摘要] The genusPriotomis(Townes, 1969, p. 292) was placed by itsauthor in the subtribe Lymeonina of the ichneumonid tribe Mesostenini.While data provided by a study of the new species treatedin this article do not controvert that placement it is well to emphasizethatPriotomisshows a number of singularly aberrant charactersunparalleled among other genera of its subtribe. For example, thepresence of a series of teeth on the dorsal valve of the ovipositor tiprecalls the Baryceratina rather than the Lymeonina, whereas thespecialized, twisted mandibular apex is not found in any other mesosteninegenus.Priotomiswas described from a unique female collected in thewet subtropical forest of Santa Catarina State in southern Brasil.Now, however, another specimen has come to light, from the invernallydeciduous Chaco Forest o northwest Argentina, and this form,while agreeing perfectly with Townes' diagnosis of Priotoms, differsin so many respects from its Brazilian congener that it must berecognized as a separate species.

[学科分类] 生物科学（综合）