Taxon classification Animalia Diptera Chironomidae

Nilothauma hibaratertium Sasa

Nilothauma hibaratertia Sasa, 1993: 73.

Tosayusurika simantofea Sasa, Suzuki & Sakai, 1998: 52

Nilothauma hibaratertium Sasa: Adam and Sæther 1999: 71.

Material examined.

1 male (EJNU), Yunnan Province, Mengla County, Menglun Town, Luosuo River at Xishuang Banna Tropical Botanical Garden, 29.viii.2014, Tang HQ, light trap; 2 males (EJNU), Anhui Province, Huangshan Nature Conservation Reserve, Fuxi stream, 25.v.2012, Tang HQ, light trap; 1 male (EJNU), Guangdong Province, Jiangmen City, Beifengshan Nature Conservation Reserve, 7.vii.2012, Tang HQ, light trap; 2 males (LTZU), Zhejiang Province, Jiangshan City, 12.viii.2012, Lin XL, sweep net; 1 male (LTZU), Zhejiang Province, Linan City, Tianmu Mountain, 16.vii.2012, Lin XL, sweep net; 1 male (EJNU), Fujian Province, Longqishan Nature Conservation Reserve, 14.xi.2012, Tang HQ, light trap; 2 males (EJNU), Fujian Province, Meihuashan Nature Conservation Reserve, 16.xi.2012, Tang HQ, light trap; 1 male (EJNU), Hainan Province, Bawangling Nature Conservation Reserve, 30.iv.2012, Tang HQ, light trap.

Remarks.

Nilothauma hibaratertium has never been described sufficiently, especially in the coloration of the adult. Examination of fresh specimens showed that the foreleg of the adult has distinct dark markings on the base and sub-apex of femora, and the apices of tibia and tarsomere 1. This is the first record of Nilothauma hibaratertium from the Oriental region; previously, this species has only been recorded from Palaearctic Japan (Yamamoto and Yamamoto 2014).

Distribution.

Oriental China (Yunnan, Anhui, Guangdong, Zhejiang, Fujian, and Hainan Provinces); Palaearctic Japan.