New record of the rare genus Analysson Krombein, 1985 (Hymenoptera: Crabronidae) from Vietnam, with description of a new species Author Pham, Phong Huy 0000-0001-5350-3865 Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology & Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Street, Cau Giay, Ha Noi, Vietnam. phong. wasp @ gmail. com; https: // orcid. org / 0000 - 0001 - 5350 - 3865 phong.wasp@gmail.com text Zootaxa 2023 2023-04-24 5271 1 180 184 http://dx.doi.org/10.11646/zootaxa.5271.1.10 journal article 10.11646/zootaxa.5271.1.10 98385a55-68bf-45c1-961d-b54a85bd2fca 1175-5326 7859868 F5A30C75-54DD-45EB-AE75-CE4A6D135668 Key to the species of the genus Analysson Krombein (male unknown in Analysson vietnamensis Pham sp. nov . ) 1. First recurrent vein contiguous with vein separating first and second submarginal cells; pygidial plate with brown to reddish golden setae; mid coxa and trochanter black; forewing with veins dark brown; anterior margin of hindwing without small infuscate spot subapically. Body length of female 7.0 mm. Sri Lanka , India ........ Analysson rufescens Krombein, 1985 - First recurrent vein joining first submarginal cell at some short distance from second submarginal cell ( Figs 8 & 14 ); pygidial plate with cinereous setae ( Fig. 13 ); most of mid coxa and trochanter red ( Figs 6, 7 , 14 ); forewing with veins blackish to yellowish ( Figs 8 & 14 ); anterior margin of hindwing with small infuscate spot subapically ( Fig. 8 ). Body length of female 5.6–5.8 mm . Vietnam ................................................. Analysson vietnamensis Pham , sp. nov.