Key to genera of Adenissina

1. Forewings with many transverse veins (Fig. 4). Gonoplacs, in lateral view, rounded, short, with dorso-caudal angle not protruding beyond the apex of anal tube (Figs 2D, 7B) .............................. 2

– Forewings with only longitudinal veins distinctly visible. Gonoplacs, in lateral view, angular, long, with dorso-caudal angle clearly protruding beyond the apex of anal tube (Gnezdilov 2017a: figs 10, 12) .......................................................................................... Raunolina Gnezdilov & Wilson, 2006

2. Male pygofer with a spine- or tooth-like process on each side of its dorso-caudal margins (Gnezdilov & Wilson 2011: figs 7, 12, 18). Suspensorium with horn-shaped process (Gnezdilov & Wilson 2011: figs 1, 8, 16; Gnezdilov 2017b: fig. 9a). Aedeagus without ventral hooks ......................................... ................................................................................................................ Adenissus Linnavuori, 1973

– Male pygofer and suspensorium without processes. Aedeagus with pair of ventral hooks (Figs 6F, 8A, vh) .............................................................................................................................................. 3

3. Style with small capitulum on short neck. Each dorso-lateral phallobase lobe with broadly rounded (not mushroom-shaped) outgrowth above ventral lobe. Ventral phallobase lobe wide (Gnezdilov & Wilson 2006: figs 20–22) ............................................................................. Perissana Metcalf, 1952

– Style with massive, curved capitulum, without neck (Figs 6D–E, 8E–F). Each dorso-lateral phallobase lobe with mushroom-shaped outgrowth above ventral lobe (Figs 6F, 8A, mot). Ventral phallobase lobe narrow (Figs 6G, 8C, vl) ............................................................... Oceatra gen. nov.