This species is known from southeastern Qinghai, western Sichuan, eastern Xizang and northwestern Yunnan provinces in western China, from 2,600-4,200m asl.
Habitat and Ecology
It inhabits small to medium sized low-gradient streams, seepages and spring-fed marshes in sub-alpine and alpine areas. The surrounding habitats may include cultivated fields, forests, shrublands, grasslands and/or only sparse vegetation. It breeds in freshwater.
This is a very common species.
There are no threats known, expect perhaps overgrazing.
A lot of protected areas are present within the range of this species.
Red List Status
Least Concern (LC)
Listed as Least Concern in view of its wide distribution, presumed large population, and because it is unlikely to be declining fast enough to qualify for listing in a more threatened category.
Zhao and Jiang (1982) and Zhao and Adler (1993) considered Scutiger ruginosus to be a separate species from S. mammatus. Fei et al. (1986) considered S. ruginosus to be a polymorphic form of S. gladulatus and S. mammatus. Here we consider S. ruginosus to be a synonym of S. mammatus pending further taxonomic work.
Fei Liang, Michael Wai Neng Lau, Wu Guanfu, Wang Yuezhao 2004. Scutiger mammatus. The IUCN Red List of Threatened Species 2004: e.T57615A11663690. http://dx.doi.org/10.2305/IUCN.UK.2004.RLTS.T57615A11663690.en .Downloaded on 23 January 2019