Sampling collection localities and distribution of the Sinocyclocheilus longicornus sp. nov. and 21 species of the S. angularis and S. microphthalmus species groups of the genus Sinocyclocheilus in Southwest China. 1. Hongguo Town, Panzhou City, Guizhou Province. 2. Baotian Town, Panzhou City, Guizhou Province. 3. Xinlongchang Town, Xingren City, Guizhou Province. 4. Zhexiang Town, Zhenfeng County, Guizhou Province. 7. Huancheng Town, Luoping County, Yunnan Province. 5–6, 8–22 is detailed in Suppl. material 1. The maps are from Standard Map Service website (http://bzdt.ch.mnr.gov.cn/index.html).