Adenissina, Dlabola, 1980

Gnezdilov, Vladimir M. & Malenovský, Igor, 2023, First record of the planthopper tribe Adenissini (Hemiptera: Caliscelidae) from Socotra Island, with description of a new genus and two new species, European Journal of Taxonomy 888 (1), pp. 46-63 : 48

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.

Figures

Fig. 4. Adenissina Dlabola, 1980, forewings. A. Perissana dlabolai Gnezdilov & Wilson, 2006, ♂. B–C. Oceatra litoralis gen. et sp. nov., paratype, ♂ (ZIN). B. Left wing. C. Right wing. Not to scale.

Fig. 2. Oceatra litoralis gen. et sp. nov., paratype, ♀ (MMBC). A. Dorsal view. B. Frontal view. C. Terminalia, ventral view. D. Terminalia, lateral view.

Fig. 7. Oceatra litoralis gen. et sp. nov., paratype, ♀ (MMBC), terminalia. A. Pygofer and anal tube, dorsal view. B. Genital block, lateral view. C. Sternite VII, ventral view. Not to scale.

Fig. 6. Oceatra litoralis gen. et sp. nov., holotype, ♂ (MMBC), terminalia. A. Genital block, lateral view. B. Pygofer, lateral view. C. Anal tube, dorsal view. D. Style, lateral view. E. Style, dorsal view. F. Penis, connective, and anal tube, lateral view. G. Penis, ventral view. H. Penis and connective, dorsal view. I. Apex of penis, dorsal view. Abbreviations: aep = apical aedeagal process; mot = mushroomshaped outgrowth of phallobase; vh = ventral aedeagal hooks; vl = ventral phallobase lobe. Not to scale.

Fig. 8. Oceatra scandens gen. et sp. nov., holotype, ♂ (MMBC), terminalia. A. Genital block, lateral view. B. Anal tube, dorsal view. C. Penis, ventral view. D. Apex of penis, dorsal view. E. Style, lateral view. F. Style, dorsal view. Abbreviations: aep = apical aedeagal process; lt = lateral tooth; mot = mushroom-shaped outgrowth of phallobase; vh = ventral aedeagal hooks; vl = ventral phallobase lobe. Not to scale.