Darwallia Gnezdilov, 2010

Darwallia Gnezdilov, 2010: 43 (type species: Issus patulus Walker, 1857, by original designation).

Diagnosis

The genus can be recognized by the following characters: medium to large-sized; vertex elongate, lateral margins keel-shaped; frons narrow, weakly enlarged above clypeus, with median carina; lower part of postclypeus and anteclypeus with median triangular projection; tegmen broad, without hypocostal plate; hind wing trilobed; each dorsolateral phallobase lobe with large, nearly triangular, serrated subapical process; aedeagus with pair of long acuminate ventral hooks.