A new family of aphids (Hemiptera Sternorrhyncha) from the Lower Cretaceous of Baissa Transbaikalia

摘要

The family Rasnitsynaphididae >fam. n. has a unique combination of characters: 9-segmented antennae; rhinaria arranged in many transverse rows, surrounding the antennal segments; segment IX narrower than other segments of flagellum, always without rhinaria; cubitus branches separated; ovipositor present; siphuncular pores absent. The new family comprises the genus Rasnitsynaphis >gen. n. with three species, Rasnitsynaphis ennearticulata >sp. n., Rasnitsynaphis coniuncta >sp. n., and Rasnitsynaphis quadrata >sp. n., all from the Lower Cretaceous of Transbaikalia.