Bungona (Centroptella) longisetosa ( Braasch & Soldán, 1980 )

Shi, Weifang & Tong, Xiaoli, 2019, Genus Bungona Harker, 1957 (Ephemeroptera: Baetidae) from China, with descriptions of three new species and a key to Oriental species, Zootaxa 4586 (3), pp. 571-585 : 572-573

Bungona (Centroptella) longisetosa ( Braasch & Soldán, 1980)

( Figs 1–5 )

Centroptella longisetosa: Braasch & Soldán, 1980: 123 .

Cloeodes longisetosus: Waltz & McCafferty, 1987a: 177 ; 1987b: 201; Tong, Dudgeon & McCafferty, 2003: 669.

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

Material examined (deposited in ethanol unless otherwise stated). Besides the material examined by Tong et al. (2003), the following additional specimens have been studied: CHINA. Guangdong: 1 nymph, Wengyuan County, Xinjiang Town, Yangzigang (24.48°N, 113.80°E, alt. 128m), 21.v.2011, coll. Weifang Shi; 1 nymph, Dongguan City, Xiegang Town, Yingpingzui Forest Park (22.90°N, 114.22°E, alt. 160m), 22.x.2011, coll. Weifang Shi ; 1 nymph, Conghua City, Bishuiwan (23.70°N, 113.72°E, alt. 60m), 19.xi. 19.2011, coll. Weifang Shi. Hainan: 2 nymphs, Wangning City, Nanqiao Town (18.69°N, 110.16°E, alt. 50m), 22.iv.2011, coll. Weifang Shi ; 1 nymph, Baisha County, Yinggeling National Nature Reserve (19.03°N, 109.54°E, alt. 540m), 27.iv.2011, coll. Weifang Shi.

Distribution and biology. China (Guangdong, Hainan, Hong Kong). The nymphs usually inhabit the stone surfaces in slow current streams. Presumably it has a wide geographical range in southern China.

Comments. This species was originally described by Braasch and Soldán (1980) based on nymphs from Liu Chui, China. Later, Tong et al. (2003) redescribed the nymphal stage and provided the description of imagoes reared in the laboratory from mature nymphs, thereby confirming their association. The nymph of B. (C.) longisetosa ( Figs 4–5 ) is characterized by the extremely short maxillary palpus (about 1/2 the length of galealacinia) ( Fig. 1 ) and abdominal sternites IV–VI each with a pair of long and fine setal tufts (i.e. with contiguous setal bases) ( Fig. 3 ). In male imaginal stage, it can be easily separated from the imaginal congeners by the presence of a well-developed rectangular protuberance between the genital forceps bases (Tong et al. 2003).

Figures

FIGURES 1–5. Nymph of Bungona (Centroptella) longisetosa (Braasch & Soldán) (1) right maxilla; (2) claw; (3) abdominal sterna IV–VI; (4) habitus of male nymph (dorsal view); (5) habitus of female nymph (dorsal view).