Stenogiffardia, Evans, 1977

Gnezdilov, Vladimir M., 2019, First record of the genus Stenogiffardia (Auchenorrhyncha: Cicadellidae) from Madagascar, with description of a new species and a key to species, Acta Entomologica Musei Nationalis Pragae (Acta. Ent. Mus. Natl. Pragae) 59 (2), pp. 549-554 : 552-553

Key to species of Stenogiffardia

1 Head strongly produced ( Figs 19–21 ). ..................... 2

– Head weakly produced ( Figs 22, 23 ). ....................... 5

2 Vertex rather acuminate apically ( Figs 19, 21 ). ........ 3

– Vertex rather rounded apically ( Fig. 20 ). ................. 4

3 Vertex 3.5 times as long as wide between eyes ( Fig. 19 ). Frons with median carina in its apical part ( EVANS 1977: fig. 12B). Total length of female (from apex of vertex to apex of ovipositor) 7.0–8.6 mm. .................. ........................................... S. elongata Evans, 1977

– Vertex 2–3 times as long as wide between eyes ( Fig. 21 ). Frons lacking median carina ( KIRKALDY 1906: Pl. XXII, fig. 3). Total length of female (from apex of vertex to apex of ovipositor) 6.2 mm. .............................. ..................................... S. parvula ( Kirkaldy, 1906)

4 Style with apex straight ( Fig. 14 ). Aedeagus strongly bifurcate ventrally ( Figs 11, 12 ). Female sternite VII with hind margin convex medially ( Figs 24, 25 ). ....... .................................................... S. bifurca sp. nov.

– Style with apex bent ( EMELJANOV 2002: fig. 4). Aedeagus not bifurcate ventrally ( EMELJANOV 2002: fig. 8). Female sternite VII with hind margin concave medially ( Fig. 26 ). ..................... S. spica ( Emeljanov, 2002)

5 Hind margin of female sternite VII with a deep notch medially ( Fig. 28 ). ......... S. ceylona ( Zahniser, 2008)

– Hind margin of female sternite VII with a wide but shallow concavity or a weak notch medially ( Figs 29, 30 ). ............................................................................ 6

6 Hind margin of female sternite VII with a wide concavity medially ( Fig. 30 ). Total length of female (from apex of vertex to apex of ovipositor) 3.0 mm. ............ .................................... S. acuminata ( Naudé, 1926)

‒ Hind margin of female sternite VII with a weak notch medially ( Fig. 29 ). Total length of female (from apex of vertex to apex of ovipositor) 4.2–4.7 mm. .............. ...................................... S. graminea ( Theron, 1982)

Figures

Figs 19–23. Stenogiffardia spp., female head and pronotum. 19 – S. elongata Evans, 1977, holotype (after EVANS 1977, modified); 20 – S. bifurca sp. nov., paratype; 21 – S. parvula (Kirkaldy, 1906) (after ZAHNISER 2012, modified); 22 – S. acuminata (Naudé, 1926) (after NAUDÉ 1926, modified); 23 – S. ceylona (Zahniser, 2008), paratype (after ZAHNISER 2008, modified).

Figs 10–16. Stenogiffardia bifurca sp. nov., holotype, male genitalia. 10 – connective, dorsal view; 11 – aedeagus, ventral view; 12 – aedeagus and connective, lateral view; 13 – genital valve and subgenital plates, ventral view; 14 – subgenital plate with style, dorsal view; 15 – same, lateral view; 16 – anal tube, pygofer, genital valve, and subgenital plates, lateral view.

Figs 24–30. Stenogiffardia spp., female sternite VII. 24 – S. bifurca sp. nov., paratype, brachypterous specimen; 25 – same, paratype, macropterous specimen; 26 – S. spica (Emeljanov, 2002), paratype; 27 – S. parvula (Kirkaldy, 1906) (after ZAHNISER 2012, modified); 28 – S. ceylona (Zahniser,2008), paratype (after ZAHNISER 2008, modified); 29 – S.graminea (Theron, 1982) (after THERON 1982, modified); 30 – S. acuminata (Naudé, 1926) (after NAUDÉ 1926, modified).