Bayadera melanopteryx Ris, 1912

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 : 162-163

Bayadera melanopteryx Ris, 1912

( Fig. 8a–g )

Bayadera melanopteryx: Ris (1912) , pp. 49–50, Fig. 2a–b ; Fraser (1928), pl. 1, Fig. 1 ; Needham (1930), p. 216; Asahina (1956), pp. 206–207, Fig. 3 ; Asahina (1977), pp. 486–487, Figs 31–37; Chao (1981), p. 23; Wilson & Reels (2003), p. 250, Figs 15–21 ; Hämäläinen (2004), pp. 392–393, Figs 14–16 ; Do & Dang (2007), p. 32 [Specimens from Pia Oac Nature Reserve, Cao Bang Prov.; first records from Vietnam]; Wilson & Zaifu (2007), pp. 93, 120, pl. Va, b; Zhang (2010), p. 25 (species list).

Bayadera melania Navás, 1934 : Hämäläinen (2004), pp. 392–393 [a new synonymy].

Materials examined. [ Vietnam] 3♂ 4♀, Pia Oac Nature Reserve , Cao Bang Prov., 21–26.V.1998, H. Karube leg. ( PKM) ; 1♀, Pia Oac Nature Reserve , Cao Bang Prov., 31.V.2015, T. Kompier leg. (TKC) ; 1♀, Pia Oac Nature Reserve , Cao Bang Prov., 15.V.2015, F. Hayashi leg. (FHC) ; 1♂ 1♀, Deo Tram Ton, Sapa , Lao Cai Prov., 21.VI.2002, H. Karube leg. ( PKM) ; 1♂, Sa Pa , Lao Cai Prov, 25.V.2015, T. Kompier leg. (TKC). [ China] 1♂, Bikou (867m) , Gansu Prov., 9.VII.2005, X. Yu leg. ( PQTC) ; 1♀, Emei , Sichuan Prov., 5.VII.2011, F. Hayashi leg. (FHC) ; 2♂ 2♀, Tiamushan , Zhejiang Prov., 8.VIII.2007, X. Yu leg. ( PQTC) ; 3♂ 1♀, Fengyangshan, Lishui , Zhejiang Prov., 28.VII.2007, X. Yu leg. ( PQTC) ; 2♂ 2♀, Wuyangling, Taishun , Zhejiang Prov., 2.VIII.2005, K. Yunling leg. ( PQTC) ; 2♀, Nanling , Guangdong Prov., 22–26.VII.2004, H. Karube leg. ( KPM) ; 2♂ 2♀, Qingliangfeng, Linan , Zhejiang Prov., 13.VIII.2007, X. Yu leg. ( PQTC) ; 1♂, Lujianhe Stream , Zigui County, Hubei Prov., 4.VIII.2012, H. Zhang leg. (KMP).

Other materials confirmed by field observations. [ Vietnam] Some individuals, Pia Oac, Cao Bang Prov., V, VI.2015, T. Kompier; Some individuals, Lao Cai Prov., V, VI, VIII.2015, V.2 0 16, T. Kompier; Some individuals, Tam Dao, Vinh Phuc Prov., VI, VII.2016, T. Kompier.

Notes. Bayadera melanopteryx differs from all described Bayadera species by the extensively darkened wingtips of both male and female. The dark area varies from covering the wings almost completely to only covering the apical quarter, as pointed out by Hämäläinen (2004). In Vietnam all specimens examined had the apical quarter of their wings dark brown (males) or brown (females) ( Fig. 8g ). Synthorax of male B. melanopteryx has clearly defined yellowish stripes when young ( Fig. 8f ), but these stripes become obscured or disappear entirely with age ( Fig. 8a ). Anal appendages are similar to those of Bayadera hyalina and B. bidentata in having cerci with a robust spine at the base ( Fig. 8b–d ). Female Bayadera melanopteryx is characterized by largely pale metepimeron ( Fig. 8e ).

Distribution. Vietnam (Cao Bang, Lao Cai and Vinh Phuc Provinces), China (Gansu, Shaanxi, Hubei, Sichuan, Zhejiang, Fujian, Guangdong and Guangxi Provinces) ( Hämäläinen 2004, Wilson & Reels 2003, Zhang 2010).

Figures

FIGURE 2. Anisopleura qingyuanensis. [2a–d] ♂ and [2e–f] ♀, Tu Le. (2a) head and thorax; (2b) head, oblique-dorsal view; (2c) appendages, dorsal view; (2d) appendages, lateral view; (2e) head and thorax; (2f) head, oblique-dorsal view.

FIGURE 8. Bayadera melanopteryx. [8a–e, g] ♂ and ♀, Pia Oac and [8f] ♂, Zhejiang. (8a) male head and thorax; (8b) appendages, dorsal view; (8c) appendages, lateral view; (8d) appendages, ventral view; (8e) female head and thorax; (8f) male head and thorax; (8g) male wings.

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.

FIGURE1. Anisopleurabipugio. [1a–c] ♂,A Luoi and [1d–h]♀, Hon Ba.(1a)head and thorax;(1b)appendages,dorsal view; (1c) appendages, lateral view; (1d) body; (1e) head, frontal view; (1f) prothorax,lateral view; (1g) prothorax, dorsal view; (1h) basal half of HW.

FIGURE3. Anisopleurayunnanensis. [3a–c] ♂,Yunnan and [3d]♀,Sapa.(3a) head and thorax; (3b) appendages, dorsalview; (3c) appendages, lateral view; (3d) head and thorax.

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.

FIGURE 18. Euphaea spp. [18a–f] vesicle of male and [18g–j] prothorax of female, dorsal view. (18a, b, g) E. saola sp. nov. from (18a) A Luoi and (18b) Chu Mom Ray; (18c, h) E.guerini, Bhalee; (18d, i) E. hirta, Nam Nung; (18e, j) E.masoni, Lang Van; (18f)E. pahyapi, Phu Quoc.

FIGURE 19. Euphaea pahyapi. [19a–d] ♂, Phu Quoc. (19a) head and thorax; (19b) head, antero-dorsal view; (19c) appendages, lateral view; (19d) wings.

FIGURE 20. Euphaea spp. [20a–d] Euphaea saola sp. nov., holotype ♂ and paratype ♀ and [20e] E. guerini, Hon Ba. (20a) habitus male; (20b) S9–10 and appendages, lateral view; (20c) genital ligula, dorsal view; (20d) head female, antero-dorsal view; (19e) S10 and appendages, lateral view.Scale bar is 10 mm in 20a.

FIGURE21. Distribution maps of 3 Anisopleura and 7 Bayaderaspecies in Vietnam.Closed circles represent the provinces in which the distribution is confirmed. Lines drawn in A. bipugio show the northern, central, and southern areas of Vietnam separated by the gaps of mainmountainous regions.