Three small genera of the subfamily Doryctinae are newly recorded for the Braconidae fauna of Vietnam, viz. Euscelinus Westwood, 1882; Leptospathius Szépligeti, 1902 and Sonanus Belokobylskij & Konishi, 2001. Five new species of these genera are described and illustrated, namely Euscelinus vietnamicus Long, sp. n.; Leptospathius langsoni Long, sp. n.; Leptospathius phamvanluci Long, sp. n.; Leptospathius simulatus Long, sp. n. and Sonanus mocchaui Long, sp. n | New records of rare genera of the subfamily Doryctinae (Hymenoptera: Braconidae) with description of five new species from Vietnam