A new species of genus Prosopigastra A. Costa (Hymenoptera: Crabronidae: Crabroninae) from China, with a key to the Chinese species Author Zhao, Liyuan 0000-0002-4600-0917 Department of Entomology, College of Plant Protection, Yunnan Agricultural University, Kunming, Yunnan, 650201, P. R. China. & 1941795954 @ qq. com; https: // orcid. org / 0000 - 0002 - 4600 - 0917 1941795954@qq.com Author Li, Qiang 0000-0001-5950-8843 Department of Entomology, College of Plant Protection, Yunnan Agricultural University, Kunming, Yunnan, 650201, P. R. China. & liqiangkm @ 126. com; https: // orcid. org / 0000 - 0001 - 5950 - 8843 Author Ma, Li 0000-0002-3436-1387 Department of Entomology, College of Plant Protection, Yunnan Agricultural University, Kunming, Yunnan, 650201, P. R. China. & maliwasps @ aliyun. com; https: // orcid. org / 0000 - 0002 - 3436 - 1387 maliwasps@aliyun.com text Zootaxa 2021 2021-11-29 5072 2 157 164 journal article 3178 10.11646/zootaxa.5072.2.4 6809235a-3afc-486f-ba35-e7b981df9ca4 1175-5326 5733706 5BCF182E-75A2-4073-B051-584EF22E2733 Key to species of Prosopigastra of China Females The female of Prosopigastra simpliciclypeata is unknown and not included 1. Gastral segments I–II red, body length more than 8 mm ( Fig. 3a )........................... P. orientalis de Beaumont - Gastral segments I–II black, body length less than 8 mm ...................................................... 2 2. Tibiae pale yellow above, brownish yellow beneath; clypeal bevel longer than basomedian area; lip evenly arcuate, emarginate medially, without lateral incisions; vertex sparsely punctate; punctures sparse and more than 4 × diameters apart on scutum and mesopleuron; in fore wing, fore margin of marginal cell nearly as long as pterostigma ( Fig. 3c ).... P. globiceps F. Morawitz - Tibiae black; clypeal bevel as long as basomedian area; lip with dentate processes, a total of six teeth, and with lateral incisions ( Fig. 2b ); vertex densely punctate; punctures dense and no more than 1 × diameter apart on scutum ( Fig. 2c ), mesopleuron punctatorugose, punctures about 0.2 × diameters apart ( Fig. 2d ); in fore wing, fore margin of marginal cell longer than pterostigma........................................................................... P. falsa F. Morawitz Males 1. Tibiae and tarsi pale yellow; interocular distance less than 1 × DOA; vertex impunctate; scutum with sparse, midsize punctures; in fore wing, fore margin of marginal cell nearly as long as pterostigma; propodeal enclosure with slender ridges; sterna III–V with prominent, transverse swelling ( Fig. 3d )............................................ P. globiceps F. Morawitz - Tibiae black, tarsi fulvous or reddish; interocular distance more than 1 × DOA; vertex densely punctate; scutum with unevenly dense, midsize or large punctures; in fore wing, fore margin of marginal cell longer than pterostigma ( Fig. 4h ); propodeal enclosure with sturdy ridges; sterna III–V with inconspicuous, transverse swelling ( Fig. 1f ).......................... 2 2. Clypeal lobe without lip, free margin truncate or weakly arcuate, with sharp corner; bevel laterally delimited by small carina..................................................................................... P. falsa F. Morawitz - Clypeal lobe with lip, free margin with prominent corner; bevel laterally not delimited by carina...................... 3 3. Clypeal bevel shorter than basomedian area, clypeal free margin double edged on each side of lobe ( Fig. 4e ); flagellomeres II–III convex ventrally; punctures of mesothoracic venter about 1–2 diameters apart medially..... P. orientalis de Beaumont - Clypeal bevel as long as basomedian area, clypeal free margin single edged on each side of lobe ( Fig. 1b ); flagellomeres II–III cylindrical; punctures of mesothoracic venter about 0.2 × diameters apart ( Fig. 1e ).............. P. simpliclypeata sp. nov.