High-spired South and Southeast Asian Streptaxoidea has been classified mostly in the Diapheridae, and partly in the Streptaxidae, and the systematic position of several of them has not been resolved yet. The examination of conchological characters and the analysis of the homologies of apertural barriers revealed that some new genera must be introduced. Parasinoennea Z.-Y. Chen & Páll-Gergely, new genus, is erected to include a few species from Vietnam and southern China. Platylennea Páll-Gergely, new genus, and Rowsonia Páll-Gergely, new genus, include species from the Western Ghats of southern India. Pupennea Páll-Gergely, new genus, is erected for Pupa planguncula Benson, 1863, which inhabits central India. All these three are probably members of the Diapheridae. We list all Diapheridae species of India and Myanmar, and describe three new species from Myanmar as follows: Diaphera polita Páll-Gergely, new species; Diaphera turbanophora Páll-Gergely & Grego, new species; Sinoennea montawana Páll-Gergely & Hunyadi, new species. Sinoennea longtanensis S. Ouyang, X.-M. Liu & X.-P. Wu, 2012 is treated as a synonym of Parasinoennea splendens (Möllendorff, 1882).

The phygadeuontine genus Chrysocryptus (Ichneumonidae) is reviewed for the first time on the basis of ichneumonid collections in the Institute of Ecology and Biological Resources, Hanoi (Vietnam), the Natural History Museum, London (UK), and the Naturalis Biodiversity Center, Leiden (the Netherlands). A new species, Chrysocryptus brevis, is described from northern Vietnam. In addition, C. aureopilosus is recorded for the first time from Vietnam and from Indonesia (West Java). A key to all four known species of the genus Chrysocryptusis included.