A new species of Leptephialtites Rasnitsyn, 1975 (Insecta: Hymenoptera: Ephialtitidae) from the Jurassic Daohugou Beds of NE China
Leptephialtites Rasnitsyn, 1975 is a diverse wasp genus of the subfamily Ephialtitinae (Ephialtitidae) in the Late Jurassic Karatau Biota from Karatau, southern Kazakhstan. It was also reported from the Middle-Late Jurassic Daohugou Biota in Ningcheng, northeastern China but no descriptions and figures had been provided. Herein, a new species is established and assigned to this genus as Leptephialtites zhangi Ding and Zhang, sp. nov. based on a female wasp from the Middle-Upper Jurassic Daohugou Beds at Daohugou Village, Wuhua Town, Ningcheng County, Chifeng City, Inner Mongolia, China. The new species shows some differences from the Karatau species in having a forewing with 1-Rs about half length of its distance to pterostigma (vs. at most as long as its distance to pterostigma) and 1r-rs complete (vs. rudimentary or completely absent), and a spindle-like metasoma broadest medially (vs. broadest in rear half). Furthermore, a key to the species of Leptephialtites is provided. Occurrence of the genus Leptephialtites in both the Karatau and Daohugou biotas confirms the close relationship between the two biotas.
the Strategic Priority Research Program of the Chinese Academy of Sciences (XDB26000000), and the National Natural Science Foundation of China (42125201, 42288201).