Rasnitsynaphis, Homan, Agnieszka & Wegierek, Piotr, 2011

Homan, Agnieszka & Wegierek, Piotr, 2011, A new family of aphids (Hemiptera, Sternorrhyncha) from the Lower Cretaceous of Baissa, Transbaikalia, ZooKeys 130, pp. 167-174 : 169

Rasnitsynaphis gen. n.

Type species.

Rasnitsynaphis ennearticulata sp. n.

Etymology.

Named to honour Alexandr P. Rasnitsyn, who is not only eminent researcher, but also a teacher of many paleoentomologists. P.W. is honoured to be one of his students.

Diagnosis.

As for family.

Description.

Body massive. Front edge of head convex. Head with epicranial suture. Rostrum shorter than body, reaching to the middle of abdomen. Antennae longer than one third of the body length but shorter than its half. Antennal segment III 2-4 times as long as wide; segments IV-VIII of the same length or nearly so. Surface of all segments of flagellum sculptured in form of transverse ribs. Rhinaria ellipsoidal, arranged in more or less dense rows which are sometimes joined. Cubital vein CuA1 2.5 times longer than CuA2. Pterostigma big, spindle-shaped, pointed, 3-3.5 times as long as wide. Vein Rs slightly bent at base. Media with two or three branches. Bifurcation of vein M into M1 and M2 or into M1+2 and M3 just beyond the base of vein Rs.

Key to species of Rasnitsynaphis