Description of Trypoxylonsicklum sp. nov. from Vietnam and a key to species in the Trypoxylonfulvocollare group (Hymenoptera, Crabronidae)

Latreille, 1796 (Hymenoptera, Crabronidae) consists of 633 known species worldwide and the genus is divided into numerous species groups. In Vietnam, 19 species of have been recorded to date. In this study, a new species, Pham and Antropov sp. nov. is described and illustrated from Vinh Phuc Province, Vietnam. The new species is the second member of the species group. A key to species in the group is presented. Pham and Antropov sp. nov., is described as a new species and is the second member of the species group. A key to species in the group is presented.