12. Bactra angulata Diakonoff, 1956

Bactra (Chiloides) angulata Diakonoff, 1956, Zool. Verh. Leiden 29: 21. Type locality: Borneo, “East Borneo (Balikpapan, Mentawi River)”. Holotype (♂): NCB.

Distribution outside Thailand: Borneo and Indonesia (Diakonoff 1956), Papua New Guinea and Sri Lanka (Diakonoff 1964).

Distribution in Thailand: C–– Nakhon Nayok Prov. (Khao Yai N.P.) and NE–– Loei Prov. (Phu Luang W.S.) (Kawabe 1989).

Host plants: Unknown.

Remarks: Specimens from Thailand were collected in dry evergreen forest and hill evergreen forest at 700–900 m.