Bungona ( Chopralla ) fusina (Tong & Dudgeon, 2003)

Bungona ( Chopralla) fusina (Tong & Dudgeon, 2003)

( Figs. 50–59 View FIGURES 50–59 )

Chopralla fusina: Tong & Dudgeon, 2003: 17 View in CoL .

Bungona ( Centroptella) fusina: Salles, Gattolliat & Sartori, 2016: 104 .

Material examined (deposited in ethanol unless otherwise stated). Besides the material examined by Tong & Dudgeon (2003), the following additional specimens have been studied: CHINA. Guangdong: 1 nymph on slides and 1 nymph, Shixing County, Chebaling National Nature Reserve ( 21.70°N, 114.25°E, alt. 370m), 21.iv.2002, coll. Xiaoli Tong. Hainan: 9 nymphs, Changjiang County, Bawangling National Nature Reserve, Dongliu ( 19.12°N, 109.09°E, alt. 220m), 12.ix.2003, coll. Wenli Wang GoogleMaps ; 10 nymphs, Baisha County, Yinggeling National Nature Reserve, Nandanxi Stream , 25.xi.2005, coll. Haiyuan Yao ; 1 nymph on slides and 13 nymphs, Baisha County, Yinggeling National Nature Reserve, Daoyin Protection Station ( 19.01°N, 109.36°E, alt. 640m), 5.xii.2005, coll. Haiyuan Yao GoogleMaps ; 1 nymph on slides and 14 nymphs, Ledong County, Jianfengling National Nature Reserve ( 18.76°N, 108.89°E, alt. 800m), 28.xi.2011, coll. Weifang Shi. GoogleMaps

Distribution and biology. China ( Guangdong, Hainan, Hong Kong). This species is widespread in southern China in association with the stone surfaces in slow-flowing or lentic habitat of streams.

Comments. Described originally based on nymph and imago from Hong Kong in the genus Chopralla (Tong and Dudgeon 2003) , this species was moved to the subgenus Chopralla of Bungona by Salles et al. (2016). Bungona ( Ch.) fusina appears to be closely related to B. ( Ch.) colorata from Vietnam based on structure, however, the body colour pattern, in particular of pro- and mesonotum ( Figs 52, 59 View FIGURES 50–59 ), is distinctly different from the latter. Furthermore, the following combination of characteristics also can be useful to distinguish them: (1) the prostheca of right mandible bifurcated and plumose ( Fig. 51 View FIGURES 50–59 ) (vs. the right prostheca plumose but not bifurcated in B. colorata ); (2) tergites V–X with acute triangular spines on posterior margins ( Fig. 54 View FIGURES 50–59 ) (vs. tergites IV–X with such spines in B. colorata ); (3) gill I less than 4 times as long as wide, and other gills relatively broad, much less than 2.5 times as long as wide) ( Figs 55–58 View FIGURES 50–59 ) (vs. in B. colorata , gill I more than 5 times as long as wide and other gills narrow-elongate and at least 2.5 times as long as wide).