Bayadera nephelopennis Davies & Yang, 1996

Phan, Quoc Toan, Kompier, Tom, Karube, Haruki & Hayashi, Fumio, 2018, A synopsis of the Euphaeidae (Odonata: Zygoptera) of Vietnam, with descriptions of two new species of Euphaea, Zootaxa 4375 (2), pp. 151-190 : 164

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).

Figures

FIGURE 9. Bayadera nephelopennis. [9a–e] ♂ and [9f] ♀. (9a) head and thorax; (9b) appendages, dorsal view; (9c) appendages, lateral view; (9d) appendages, ventral view; (9e) wings; (9f) head and thorax.

FIGURE 12. Dysphaea spp. [12a–b] D. basitincta. (12a) ♂, Cao Bang and (12b) ♀, Hainan (rearranged from Fig. 7, p. 307, Hämäläinen 2012). [12c–d] D. gloriosa; (12c) ♂ and (12d) ♀, Quang Nam. [12e–f] D. haomiao; (12e) ♂, Cao Bang and (12f) ♀, Guizhou (rearranged from Fig.5, p. 307, Hämäläinen 2012).

FIGURE13.Euphaea decorata.(13a)♂,Pia Oac Nature Reserve,Cao Bang Province; (13b)♀, Mau Son mountain,Lang Son Province (photographed by Q.T.Phan).

FIGURE 14. Dorsal view of wings of male Euphaea spp. (14a) E. hirta; (14b) E. masoni; (14c) E. guerini; (14d) E. saola sp. nov.

FIGURE15.Schematic drawingsof abdominal hair tufts inlateral view ofmale Euphaeaspp.(15a) E.saola sp.nov.; (15b)E. guerini; (15c) E.hirta; (15d) E.masoni and E. pahyapi. I–X show abdominal segments S1–10.

FIGURE 16. Euphaea spp. all ♀. (16a–b) body and head of E. hirta, Nam Nung; (16c) E. masoni, Bao Loc; (16d) E. guerini, Tay Giang; (16e) E. saola sp. nov., A Luoi.

FIGURE 17. Euphaea spp. [17a–d] E. ochracea, Mang Den, Kon Tum & [17e], Penang, Malaysia; [17f–j] holotype (♂) and paratype (♀) of E. sanguinea sp. nov. (17a, f) male habitus; (17b, g) female habitus; (17c) genital ligula, ventral view; (17e, j) left cercus, interolateral view; (17h) male head in antero-dorsal view; (17d, i) female heads in antero-dorsal view. Scale bars in mm.