Yezoceryx nebulosus Wang, 1982

(Figure 8)

Yezoceryx nebulosus Wang, 1982a: 97 . Holotype: ♀, China: Sichuan (IZCAS) Diagnosis. Dark brown to black; face largely black; pronotum and mesopleuron smooth, without striae; first tergite elongate, 2.6–3.0× as long as its posterior width; first sternite with blunt, short projecting hook; ovipositor 4.0× length of hind tibia.

Material examined. Cao Bang, Phia Oac NR: 1♀ (IEBR), 8–18.v.2013, Malaise trap, T.H. Pham leg. ; Son La, Copia NR: 2♂ (IEBR), Malaise trap, 27.iv-2.v.2016, T.V. Hoang leg.

Distribution. Previously known only from China (Sichuan) (Wang, 1982a), these are the first records of this species from Vietnam.

Remarks. The first tergite of the Vietnamese specimens is about 3.0–3.3× longer than its posterior width, a little more elongate than that of the holotype (2.6×).