Redescriptions of two incompletely described species of mole cricket genus Gryllotalpa (Grylloidea; Gryllotalpidae; Gryllotalpinae) from China with description of two new species and a key to the known Chinese species

摘要

Gryllotalpa jinxiuensis You et Li, 1990 and Gryllotalpa henana Cai et Niu, 1998, which were incompletely described, are redescribed and illustrated here based on a fuller character set of tegmen veins, stridulatory file and genitalia. Two new speciesof Gryllotalpa from Henan and Zhejiang, China are also described. Gryllotalpa is the largest genus among the five genera in the mole cricket subfamily Gryllotalpinae. It is distinguished from other genera by the following characters: fore tibiae with four dactyls; tympana covered and opening in the form of a slit; basal spur of fore leg arising from femur; veins in lateral field of fore wings pointing toward wing-tips.