Elimaea Stal (Orthoptera: Tettigoniidae: Phaneropterinae) and its relative from China, with description of twenty-three new species

摘要

Elimaea Stal is a comparatively large genus in the subfamily Phaneropterinae, which is mostly characterized by symmetric exposed tibial tympana and commonly distributed in Asia. The genus includes 6 subgenera and 131 valid species. However, species diversity of the genus Elimaea has been occasionally investigated in China. Here we provide a checklist of 53 species in the genus Elimaea and its relative from China, among which 23 species are new to science. We also establish one new subgenus Rectielimaea subgen. nov. for the type species Elimaea (Rectielimaea) percauda sp. nov., which is distinguished from other subgenera by the phallus with a long log-like sclerite horizontally produced outwards. In addition, we consider that proximal part of MP+CuIPvein in tegminal dorsal part is possibly more or less different among species and subgenera: (a) straight in the subgenera Elimaea and Rectielimaea subgen. nov. and in the species Elimaea (Schizelimaea) mira Gorochov, 2009, or (b) more or less convex laterad in the other subgenera without exception of other species in the subgenus Schizelimaea. Necessary illustrations are provided.