Coelostoma (Lachnocoelostoma) wui Orchymont, 1940

Mai, Zuqi, Hu, Jian & Jia, Fenglong, 2022, Additional fauna of Coelostoma Brulle, 1835 from China, with re-establishment of Coelostoma sulcatum Pu, 1963 as a valid species (Coleoptera, Hydrophilidae, Sphaeridiinae), ZooKeys 1091, pp. 15-56 : 15

Coelostoma (Lachnocoelostoma) wui Orchymont, 1940

Figures 14A-I , 16I, L

Material examined.

China: Hunan: 4 spec. (SYSU), Taoyuan County, Wuyunjie, Zhushan Village , 100 m, 15.vi.2019, Hao Xu leg. ; Henan: 2 spec. (SYSU), Neixiang County, Getiaopa Village (葛条爬村), 630 m, 22.vi.2021, Hao-yi Liu leg. ; Shaanxi: 1 spec. (SYSU), Xi’an County, Dayu , 12.v.2011, Feng-long Jia leg. ; Shandong: 3 spec. (HBUM): Feixian, Tashan Forest Farm, 16.-17.v.2007, Feng-yan Wang, Ji-liang Wang & Qi-qi Wu leg. ; 2 spec. (HBUM): Pingyi, Dawa Forest Farm, 13-15.v.2007, Feng-yan Wang, Ji-liang Wang & Qiqi Wu leg. ; Shanxi (山西): 8 spec. (SYSU), Jincheng, Yangcheng (阳城) County , Manghe (蟒河) National Nature Reserve , 700 m, 27.iv.2016, Zu-qi Mai leg. ; Zhejiang: 3 spec. (SYSU), Quanzhou City, Jiangshan County, Shuangxikou Town , Laofoyan Village (老佛岩村), 27°55'02.72"N, 119°11'34.47"E, 496 m, high-voltage mercury light trap, 11.viii.2018, Chen & Miao leg. ; 7 spec. (SYSU), Lin’an City, Yinlongwu Town, Shibalongtan , 30°08'24.88"N, 118°52'23.56"E, 683 m, 28.iv.2018, Shifting, Cheng & Shen leg. ; 2 spec. (SYSU), Jinhua City, Pan’an County, Lingjiangyuan (灵江源), 28°57'39.33"N, 120°38'59.72"E, 750 m, mixed leaf litter, Shifted , 21.V.2018, Puthz, Tang, Cheng & Shuai leg.

Additional material examined

(possibly another undescribed species). China: Guangdong: 5 spec. (SYSU), Shaoguan City, Chebalin (车八岭) Nature Reserve , 23°14'46"N, 113°33'56"E, 496 m, 28-29.v.2017, Feng-Long Jia, Shi-Shuai Wang & Zu-Long Liang leg. ; 24 spec. (SYSU), Shaoguan City, Chebalin (车八岭) Nature Reserve , 24°43'24"N, 114°15'23"E, 400 m, 24.viii.2020, Zu-Long Liang leg. ; Jiangxi: 91 spec. (SYSU), Longnan , Jiulianshan, 06-vii.2008, Fenglong Jia leg. ; Fujian: 2 spec. (SYSU), Wuyishan, Sangang , 16-28.v.2004, Cai-Xia Yuan & Jing Li leg. ;

Biology

(Figs 15D , 16I, L ). Collected on the ground beside a mountain river in Shanxi, active at night.

Remarks.

The specimens we studied contained two different forms of male genitalia (Fig. 14B-I ). It may be inferred that the specimens treated by previous authors as C. wui Orchymont, 1940 possibly contain two species (see Discussion).

Distribution.

China (Hubei, Hunan, Jiangxi, Shaanxi, Shandong, Shanxi, Taiwan, Xinjiang, Zhejiang), Korea. ( Hansen 1999; Jia et al. 2014; Liu et al. 2020). First record for Shanxi and Zhejiang.

Figures

Figure 14. Aedeagus of Coelostoma wui Orchymont, 1940 (dorsal view) A illustration by Orchymont (1940) B from Pingyi County (Shandong) C from Getiaopa (葛条爬) Village (Henan) D from Hanzhong (Shaanxi) E from Taoyuan County (Hunan) F from Quanzhou City (Zhejiang) G from Wuyishan (Fujian) H from Mt. Jiulianshan (Jiangxi) I from Mt. Chebaling (Guangdong). Scale bar: 0.5 mm.

Figure 15. Habitats of Chinese Coelostoma A stone walls with running waters in forest (Yunnan) B wet stone walls with moss (Guangdong) C mountain stream in forest (Guangdong) D mountain river with rocky edges (Shanxi) E wastewater in city downtown (Guangdong) F lowland marshes with vegetation (Guangdong) G artificial lake (Yunnan) H brackish lagoon in mangrove reserve (Macao).

Figure 16. Habitats of Chinese Coelostoma spp. A C. turnai Hebauer, 2006 active at wet rocky ground beside a river at night (Fujian) B C. sulcatum Pu, 1963 on sandy gutterway with shallow flowing waters at night (Guangdong) C C. phallicum Orchymont, 1940 hided under a brick beside the wastewater during the day (Guangdong) D C. phallicum Orchymont, 1940 dived under water and fed on algal mats at night (Guangdong) E C. bifidum Jia, Aston & Fikacek on wet stone wall at night (Guangdong) F C. sulcatum Pu, 1963 on muddy edge of artificial lake at night (Yunnan) G C. nankunshanense sp. nov. on a stone in the middle of a forest stream at night (Guangdong) H C. surkhetensis Hebauer, 2002 in a wet stone on the edges of a forest stream at night (Xizang) I C. wui Orchymont, 1940 on the edges of a mountain river at night (Shanxi) J C. sulcatum Pu, 1963 on muddy edges of brackish lagoon at night, with a marine Amphipoda beside it (Macao) K C. nankunshanense sp. nov. mating at night (Guangdong) L C. wui Orchymont, 1940 ovipositing eggs on wet land at night (Shanxi).