A New Species of Genus Cerceris (Hymenoptera:Crabronidae) from China

A new species,Cerceris rubigina,sp.nov.,from Hainan Province,China,is described in this paper.The type specimens are deposited in the Insect Collections of Yunnan Agricultural University.Cerceris rubigina Li et Li,sp.nov.(Figs.1-10) The new species is similar to C.sternodonta Gussakovskij,1938.It can be easily distinguished from the latter by the following characters:body ferrugineous;lower gena produced toward outside,forming an obtuse angle (Fig.2);median and lower mesopleuron with two sturdy,transverse carina;female clypeus without appendix (Fig.1);propodeal enclosure smooth and polished,with unobvious ridges laterally;tergum I without small,apicomedian fossa,length:width=1:1 (Fig.7),tergum Ⅱ with three tubercle convex basally;male tergum VI with a pair of large triangle tooth posterolaterally (Fig.5).Holotype:♀,Beida Township,Wanning City,Hainan Province,China,14-Ⅴ-2008,MA Li;Paratypes:4♀♀5♂♂,Beida Township,Wanning City,Hainan Province,China.14-Ⅴ-2008,MA Li;3♂♂,Beida Township,Wanning City,Hainan Province,China,14-Ⅴ-2008,YAN Cheng-jin.