Stymphalus Stål

Viraktamath, C. A., 2004, A revision of the Varta­Stymphalus generic complex of the leafhopper tribe Scaphytopiini (Hemiptera: Cicadellidae) from the Old World, Zootaxa 713, pp. 1-47 : 7

Stymphalus Stål

Stymphalus Stål, 1866: 121 . Type species Platymetopius rubrolineatus Stål type by original designation; Linnavuori, 1978: 479 –482; Viraktamath and Anantha Murthy, 1999: 54.

Head narrower than pronotum, vertex triangularly produced in front of eyes with concave, sharply acute lateral margins, more than 2.75 times as long as inter­ocular width, disc depressed, finely longitudinally wrinkled. Face concave in profile, medially acutely ridged in apical 0.2 length of frontoclypeus, ridge not reaching antennal pits. Clypellus slightly widened apically, 0.33 as long as frontoclypeus. Labium not exceeding prothoracic coxae. Ocelli placed close to eyes. Pronotum with caudally diverging carinate lateral margins, more than twice (2.2 times) as wide as long, flat. Front wing apically obliquely truncate, 4 times as long as greatest width. Arrangement of setae on hind tibia R 1 20 2, R 2 11 1, R 3 18 1. Hind basitarsus with five platellae.

Male pygophore simple, without stout setae or processes. Anal segments exceeding caudal margin of pygophore, without process. Male valve and subgenital plates free, triangular; subgenital plates with stout, long, irregularly arranged setae. Anal segment extending beyond pygophore, without processes. Style with broad anterior part, body of uniform width, apophysis short, without rugae. Connective fused with aedeagus, Y­shaped with parallel­sided widely separated arms, stem broad. Aedeagal shaft short, cylindrical with a large apical gonopore, dorsal apodeme short, broad, with a membranous region having short stout setae.

Remarks: Stymphalus is distinctive among the Varta ­ Stymphalus generic complex in having very simple male genitalia. The male pygophore and aedeagus lack processes, and the apophysis of the style lacks rugaeThe genus contains a single species, S. rubrolineatus .

Distribution: Afrotropical region.