Ectadia Brunner von Wattenwyl, 1878

Chun-Xiang, Liu, Le, Kang & Xian-Wei, Liu, 2004, The Genus Ectadia Brunner Von Wattenwyl (Orthoptera: Tettigoniidae: Phaneropterinae), With Descriptions Of Three New Species From China, Raffles Bulletin of Zoology 52 (1), pp. 37-43 : 37-38

Ectadia Brunner von Wattenwyl, 1878

Ectadia Brunner von Wattenwyl, 1878: 103 .

Type species. – Ectadia pilosa Brunner von Wattenwyl, 1878 .

Description. – Brunner von Wattenwyl (1878); Bei – Bienko (1954).

Redescription. – Elimaeini with modified tegminal venation and curved posterior tegminal margin. Lateral lobe of pronotum distinctly longer than high. Tibial tympana conchate on both sides. Male stridulatory area of left tegmen with a coarse Cu 2 vein and an additional adjacent thin vein as that in the tribe Ducetiini (see Gorochov & Kang, 2002) (Figs. 11-13). Stridulatory area with another additional adjacent semi-transparent membranous stridulatory area on the dorsal part of right tegmen (more distal than the mirror), which is also like that in the Ducetiini (Figs. 14-16). Internal genitalia membranous.

Remarks. – One generic character, the anteriorly sloped frons, which Bei-Bienko (1954) thought is insignificant, may be otherwise after examination of all our specimens. Another generic character in Ingrisch (1998), sexual wing dimorphism, is probably a diagnostic character to species of the genus after discovery of new species E. apicalis . In addition, all Ectadia species from China have yataghan-shaped cerci, upcurved split subgenital plate, membranous internal genitalia, but different species have very different stridulatory file. So coauthors think structure of stridulatory file is another very important diagnostic character to species and relation of Chinese Ectadia species is comparatively closer between each other.