Abrderma Xing, Shih & Ren

Xing, Changyue, Shih, Chungkun, Zhao, Yunyun & Ren, Dong, 2016, New Earwigs in Protodiplatyidae (Insecta: Dermaptera) from the Middle Jurassic Jiulongshan Formation of Northeastern China, Zootaxa 4205 (2), pp. 180-188 : 185

Abrderma Xing, Shih & Ren gen. nov.

Type species: Abrderma gracilentum Xing, Shih & Ren sp. nov.

Diagnosis. Moderately large in size. Head triangular, small. Antennae filiform with 17‒19 antennomeres, the scape broader than others. Mandibles with two apical teeth. Two ocelli present. Pronotum approximately elliptical with anterior and posterior margins subequal in width. Tarsi shorter than tibiae, hind tarsi five-segmented. Tegmen large and long with longitudinal veins strongly developed, sutural margin straight, costal margin arched. Cerci short. Tarsomeres 1‒4 shortened, horseshoe-like. Vaginulae with long exposed parts, at least longer than the last two abdominal segments combined.

Etymology. The generic name is a combination of the Greek word of “abr” meaning graceful and derma (for Dermaptera ). Gender neuter.

Comparison. Abrderma gen. nov. differs from other protodiplatyids in having cerci short and tarsomeres 1‒4 shortened and horseshoe-like.