The spider wasp genus Erythropompilus Shimizu & Pitts, 2021 (Hymenoptera Pompilidae) in China, with description of two new species and an updated key to world species Author Wu, Haiying 0000-0003-2429-507X Department of Entomology, College of Plant Protection, Yunnan Agricultural University, Kunming, Yunnan, 650201, P. R. China. & why 20161997 @ 126. com; https: // orcid. org / 0000 - 0003 - 2429 - 507 X 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 2023 2023-02-17 5244 2 160 172 http://dx.doi.org/10.11646/zootaxa.5244.2.4 journal article 10.11646/zootaxa.5244.2.4 1175-5326 7656174 B89B5171-3D4D-4FDD-8CCF-94DCE8A56EAE Genus Erythropompilus Shimizu & Pitts, 2021 Erythropompilus Shimizu & Pitts, 2021 in Shimizu et al. 2021: 341 , ♀ ♁. Type species: Erythropompilus malaysiensis Pitts & Shimizu, 2021 , by original designation. Diagnosis. Both sexes : body usually black or dark rufous, mesosoma sometimes orange-red, FW hyaline with two dark fasciae ( Figs 1A, 1F , 3A, 3F , 5A ). Vertex crest slightly above uppermost portion of occipital carina ( Figs 1B , 3B , 5B ); outer orbit sharply grooved; gena narrow ( Figs 1C , 3C , 5C ); labrum partially exposed ( Fig. 1D ); postnotum extremely short ( Figs 1C , 3C , 5C ); in dorsal view, propodeum coarsely and irregularly reticulate-rugose, and with a pair of subparallel longitudinal carinae medially ( Fig. 2G ); pterostigma large ( Figs 1F , 3F ); mid and hind tibial spurs ivory-white ( Figs 1A , 3A , 5A ); protarsus without tarsal comb, all tarsomere 5 without ventral spines, all tarsal claws bifid. Male: flagellomeres with elliptic depressed placoid sensilla ( Figs 1G, 1H , 3G, 3H ); inner fore tarsal claws conspicuously modified ( Fig. 1L ); posterolateral of S6 with pair of large and rod-shape hook pointed at middle ( Figs 1I , 3I ); exposed portion of SGP triangular or arrowhead-shaped, sometimes with long parallel side ( Figs 1K , 3K ); genitalia with paramere very short ( Figs 4A, 4D ); parapenial lobe broad and sinuated, pointed at apex ( Figs 4C, 4F ); volsella with setae, apically rounded; aedeagus broad, parallel-sided for most part ( Figs 4B, 4E ). Additional characters. Both sexes : mid and hind tibiae ventrally with 2 rows of brown, small spines; all tarsomeres 1–3 with 3 rows of ventral spines, tarsal plantulae present. Male: S6 posteriorly inverted-V-shaped or arcuately emarginated ( Figs 1I , 3I ); sides of S4 and S5 with more or less setae. Biology. There are currently no records of biological information for this genus. From our observation and collection experience, we know that representatives of the genus are active in grasslands, fields, and sunny places in woodlands and rainforests. Distribution. The Oriental Region: China ( Taiwan , Yunnan, Guangxi), Thailand , and Malaysia ( Shimizu et al. 2021 and current data). The genus is newly recorded from China mainland.