Nhi Thi Pham, Hoa Thi Dang & Duong Dinh Tran

Abstract. The ichneumonid wasp genus Hadrocryptus Cameron, 1903 is recorded for the first time from Vietnam. Hadrocryptus ditissimus (Tosquinet, 1903), previously known from Bhutan, India, Indonesia, and Malaysia, as well as H. perforator Broad & Barthélémy, 2012, formerly known only from China (Hong Kong), are newly recorded from Vietnam. In addition, two new species are described from Vietnam, namely H. caobangensis, new species and H. ferrugineus, new species. H. caobangensis was reared from the nest of Allorhynchium lugubrinum (Cameron, 1900) (Hymenoptera: Vespidae). A key to species of Hadrocryptus is included.

 Key words. Darwin wasps, parasitoid, host, new records, taxonomy

Read article here: RBZ-2025-0032