Helochares densus Sharp, 1890

Yang, Zhenming, Jia, Fenglong, Tang, Yudan & Jiang, Lu, 2021, Two new species of Helochares, with additional faunistic records from China (Coleoptera, Hydrophilidae, Acidocerinae), ZooKeys 1078, pp. 57-83 : 57

Helochares densus Sharp, 1890

Figs 34 , 56 , 57 , 58

Helochares densus Sharp, 1890: 352. Type locality: Sri Lanka (Kandy; Dikoya; Bogawantalawa).

Material examined.

1 male (IRSN), coll. R.I. Sc.N.B. N. Vietnam Tonkin, Hoa Bih, de Cooman leg.; A. d’Orchymont det.: Helochar . ( Hydrobaticus ) Helochares densus sb., with a handwriting label: Helochares densus .

Additional material examined.

Guangdong: 4 males, 3 females, Shenzhen , Dapeng Peninsula , Kuaichong, Paiyashan Natural Park, 22°38'59"N, 114°30'37"E, alt. 8 m, 5.xi.2018, Fenglong Jia and Weicai Xie leg. ; 1 male, Shenzhen , Dapeng Peninsula, Bantianyun, 22°31'16"N, 114°29'43"E, alt. 127.73 m, 7.viii.2019, Zhenming Yang, Zhuoyin Jiang, Guangyu Guo and Xinyuan Ji leg. ; 4 spec., Shenzhen , Paiyashan, 17.v.2012, Fenglong Jia and Junlei Liao leg. ; 3 spec., Shenzhen , 8-15.viii.2006, Fenglong Jia leg. ; 1 male, 2 females, Shenzhen , Pingshan , Malanshan , 22°38'31"N, 114°19'41"E, alt. 284 m, 27.vii.2019, Zhenming Yang, Zhuoyin Jiang, Guangyu Guo and Xinyuan Ji leg. Shenzhen, Neilingding, 10.v.1998, Tongxu Peng leg. ; 9 spec.; 9 spec., Zhuhai , 24.xi.2007, Fenglong Jia leg. ; 3 spec., Zhuhai , the mountain behind of campus of Sun Yat-sen University, 5-8.vii.2011, Fenglong Jia leg. ; 5 spec., Zhuhai , Hengqin Island, 10.vii.2006, Fenglong Jia leg. ; 4 spec., Zhuhai , Qi’ao Island, 12.vii.2005, Fenglong Jia leg. ; 2 spec., Danxiashan , Jinshiyan, 8.vi.2012, Fenglong Jia leg. ; 1 spec., Danxiashan , the north of Yangyuanshi paddyfield, 23.iv.2012, Junlei Liao leg. ; 1 spec., Xinhui , 6.iv.2006, Fenglong Jia leg. ; 20 spec., Guangzhou , Baiyunshan, 23.1978N 113.2948E, 15.ix.2021, Zhuoyin Jiang and Zuqi Mai leg. ; 1 male, 2 females, Guangzhou , Kangle, 24.vii.1964, Jiuru Zhang leg. ; 1 spec., 1 spec., Shantou , 15.v.1964, Tongxu Peng leg. Guangxi : 1 female, Jingxi , Bangliang, 6.viii.2010, Jianhua Huang leg. Hainan : 4 spec., Jianfengling , 22.xi.1983, Zhihe Huang leg. ; 2 spec., Jianfengling , Tianchi, 5-6.vii.1981, Guofeng He leg. ; 3 spec., Wanning , 17.xii.1957, Cuiying Li leg. ; 2 spec., Tongshi , 19.xii.1957, Cuiying Li leg. ; 1 spec., Xinglong , 3.i.1964, Tongxu Peng leg. ; 6 spec., Changjiang , Bawang town, 10.v.2007, Yibing Ba and Juntong Lang leg. Macao: 1 male, Ludangcheng , ecological preservation area, one area, 15-16.x.2016, Fenglong Jia and Weicai Xie leg. Yunnan : 2 spec., 1090 m, 30.vii.2010, Wangang Liu leg.; 1 female, Honghehekou , Binglangzhai Reservoir, 4.v.2011 , Yun Li light trap.; 1 spec., Mengla , Wangtainshu, 6-7.viii.2007, Guodong Ren and Wenjun Hou and Yalin Li leg. ; 1 male, Xishuangbanna Botanical Garden (west area), near Wanglian Hotel, 4-11.iv.2021, Huang Baoping leg.

Distribution.

China (Fujian, Guangdong, Guangxi, Hainan, Hunan, Jiangxi, Macau, Sichuan, Yunnan, Zhejiang), Andaman Islands, India, Thailand, Vietnam. New for Macao.

Habitat.

This species occurs in mud with aquatic grass at the edge of pool, under root of waterside grass, or slow stream. It never was collected by light trap.

Figures

Figures 33 - 36. Habitus of Helochares spp., dorsal view 33 H. sauteri d'Orchymont 34 H. densus Sharp 35 H. lentus Sharp 36 H. neglectus (Hope).

Figures 53 - 60. Aedeagi of Helochares spp 53 - 55 H. sauteri d'Orchymont 53 dorsal, 54 lateral, 55 ventral and data of specimen 56 - 58 H. densus Sharp 56 dorsal 57 lateral 58 ventral and data of specimen 59 - 60 H. lentus Sharp 59 dorsal 60 lateral.