Thagria periserrula Zhang

(Figs. 191–201)

Thagria periserrula Zhang 1994: 48 –49, Fig. 44; Nielson 2013: 96

Distribution. China (Guangxi, Guizhou, Hainan); Laos; Vietnam.

Material examined. 2♂ 2♀, CHINA: Guizhou, Libo, Dongtang, 22 May 1995, coll. Chen Xiangsheng; 4♂, CHINA: Guizhou, Libo, Maolan, 25 May 1998, coll. Li Zizhong; 1♂, CHINA: Hainan, Jianfengling, 12 July 2007, coll. Song Qiongzhang; 1♂, CHINA: Hainan, Bawangling, 27 April 2009, coll. Jiang Xiaohong; 1♂, CHINA: Guangxi, Longzhou, Nonggang, 6 May 2012; 1♂, CHINA: Hainan, Wuzhishan, 3 April 2013, coll. Li Bin; 2♂ 2♀, CHINA: Hainan, Bawangling, 13–16 April 2014, coll. Yang Weicheng, Long Jiankun, Sun Haiyan & Xu Fangling; 1♂, CHINA: Hainan, Jianfengling, 23 April 2014, coll. Long Jiankun (GUGC).

Variation. Based on the examined specimens, the pygofer caudoventral lobe is long and bluntly narrowed in lateral view and the segment X ventral processes are long, exceeding the apex of pygofer in specimens from Guangxi, Guizhou (Fig. 195), but in Hainan both are relatively short (Fig. 201).

Remarks. This species was described from the holotype (male) from ZSU (Sun Yat-Sen University, Guangzhou, Guangdong, China). It resembles T. vastestyla Wang & Li, 2002 in general appearance, but differs in having the ventral processes of segment X straight (Figs. 195, 201), versus curved in T. vastestyla (Wang & Li 2002: 2, Fig. 2); the paraphysis lateral margins are toothed, without process, and the style is slender with the apex pointed (Fig. 198), whereas in T. vastestyla there are two processes on the paraphysis, and the style is broad, with apex expanded (Wang & Li 2002: 2, Figs. 4, 6).