中国科学院南京地质古生物研究所机构知识库

Thirteen new species referable to four genera, of which one is new, from the Cretaceous of Russia and Mongolia are established herein and assigned to the family Pelecinidae. Among the four gerera, Protopelecinus gen. nov., including four new species is referred to the subfamily Pelecininae, white Iscopinus Kozlov, including three new species, Eopelecinus Zhang, Rasnitsyn and Zhang, including five new species, and Scorpiopelecinus laetus sp. nov. are assigned to the subfamily Iscopininae. Of these new taxa. eight[. namely Protopelecinus regularis, P. furtivus, Iscopinus simplex, ?I. suspectus, Eopelecinus exquisitus. E. scorpioideus. E. rudis and Scorpiopelecinus laetus. are from the Lower Cretaceous Zaza Formation of Baissa. Transbaikalia. Russia: two. E. minutus and E. fragilis, are from the basal Lower Cretaceous Tsagan-Tsab Formation of Khutel-Khara. Mongolia: two. P. dubius and P. deformis, are from the Lower Cretaceous (Aptian?) of Boil Tsagan. Mongolia; and one, I. separatus. is from the Upper Cretaceous (Cenomanian) Ola Formation of Obeshchayushchiy. Russia. A key to fossil pelecinid wasps is provided and a morphological analysis shows that the Pelecinidae might be paraphyletic with respect to the Proctotrupidae. The Chinese insect fauna from both the Yixian and Laiyang formations is dominated by Eopelecinus and Sinopelecinus whereas the Siberian divided by Mongolian fauna from the Zaza and Tsagan-Tsab formations is dominated by Eopelecinus and Iscopinus. Hence, Eopelecinus is common to both. The differences between the two faunas are likely to be the result of geographical variation in populations. (C) 2004 Elsevier Ltd. All rights reserved.