A new genus and species of the aphid parasitoids (Hymenoptera: Braconidae: Aphidiinae) from the Eocene Sakhalinian amber

Abstract

The new fossil genus and species, Sakhalinoctonus alexrasnitsyni Davidian, gen. et sp. nov., of hymenopteran parasitoids of aphids from the subfamily Aphidiinae (Braconidae) is described from the Middle Eocene Sakhalinian amber. This new genus is similar with the extinct Protacanthoides Mackauer, 1961 and Promonoctonia Starý, 1973 as well as with the extant Calaphidius Mackauer, 1961, Indaphidius Starý, 1979, Aclitus Foerster, 1862 and Archaphidus Starý & Sсhlinger, 1967, and differs from them by the small number of antennal segments, details of wing venation and propodeum areolation, the shape and pubescence of the ovipositor sheaths.