First record of subgenus Thao Tsuneki, 1982 (Hymenoptera: Crabronidae Crabronini) from India: a new subspecies and a key to all subspecies of Crossocerus (Thao) nitidicorpus Tsuneki Author Saini, Varun 0000-0003-4859-869X National Pusa Collection, Division of Entomology, ICAR-Indian Agricultural Research Institute, New Delhi- 110012, Delhi, India. & varuninsectaxonomist @ gmail. com; https: // orcid. org / 0000 - 0003 - 4859 - 869 X varuninsectaxonomist@gmail.com Author Dey, Debjani National Pusa Collection, Division of Entomology, ICAR-Indian Agricultural Research Institute, New Delhi- 110012, Delhi, India. text Zootaxa 2022 2022-06-28 5159 1 117 124 journal article 110550 10.11646/zootaxa.5159.1.5 b2a18605-f74a-4b15-8cf3-d2bea139ae12 1175-5326 6770966 05A744A9-B876-4301-BDF2-552A83F2542E Genus Crossocerus Lepeletier de Saint Fargeau & Brullé, 1835 Subgenus: Thao Tsuneki, 1982 e: 33. Type species: Crossocerus nitidicorpus Tsuneki, 1968 , by original designation and monotypy. Diagnosis. Mandible tridentate, inner margin without tooth; pronotal collar with ( Fig. 9 ) or without trace of median notch; mesopleuron without precoxal denticle ( Fig. 10 ); tergum II with large round hollow depression at the base ( Figs 2 & 13 ); pygidial plate a narrow, isosceles triangle ( Fig. 15 ), smooth, slightly depressed dorsally ( Tsuneki 1982 ; Leclercq 2009 ).