Bayadera nephelopennis Davies & Yang, 1996

(Fig. 9a–f)

Bayadera nephelopennis: Davies & Yang (1996), pp. 148–149, Figs 12–17.

Materials examined. [Vietnam] 7♂ 2♀, Sa Pa, Lao Cai Prov., 22.V.2014, Q.T. Phan leg. (PQTC) ; 1♂ 1♀, Sa Pa, Lao Cai Prov., 25.V.2015, T. Kompier leg. (PQTC) ; 1♂ 1♀, Sa Pa, Lao Cai Prov., 18.V.2015, T. Kompier leg. (TKC) ; 1♂, Sa Pa, Lao Cai Prov., 28.V.2016, T. Kompier leg. (TKC). [China] 3♂, Emeishan, 800 m, Sichuan Prov., 25.VII.2017, X. Liu leg. (FHC).

Other materials confirmed by field observations. [Vietnam] 17 exs, Lai Chau Prov., 28–29.V.2017, T. Kompier.

Notes. This is a new record for Vietnam. Male Bayadera nephelopennis is characterized by a black body with pruinosity on legs, basal abdomen, and ventral sides of synthorax (Fig. 9a). Wings are cloudy light brown in basal two-thirds with hyaline apex in Chinese males, but hyaline with slightly darkened apex in Vietnamese ones (Fig. 9e). Anal appendages are long in lateral view and cerci are characterized by two well defined closely spaced tubercles (Fig. 9b–d). Female is separated from other Bayadera species by a broad dorsal stripe over mesepisternum of synthorax (Fig. 9f).

Distribution. Vietnam (Lao Cai and Lai Chau Provinces), China (Sichuan Province) (Davies & Yang 1996).