Myotis Watasei feeds on insects, especially mosquitoes, and is beneficial to humans. Csorba et al. (2014) classified the goatley-eared bat (<Myotis formosus) and its related species. Dang Feihong et al. (2016), through morphological and molecular studies, showed that the "goat-eat-bat" originally identified in the domestic literature (the scientific name was misused as <M. formosus>) was actually Watsei-eat-bat (<M. rufoniger>). The intra-Chinese distribution is mainly concentrated in eastern China, while the related species of Golden Myotis bat (<M. formosus) is only recorded in Taiwan and Jiangxi.
Myotis Watsei, known as the "most beautiful bat", mainly feeds on insects, roosts in trees and bamboo forests in summer, and overwinters in caves and wall caves in winter.
On the afternoon of February 6, 2022, volunteers of the China Green Hair Association found six colorful bats near Huaguo Mountain in Lianyungang City, which was very beautiful. Later identified by Dr. Shi Jingzhu of the Chinese Academy of Social Sciences, they are Watase's Myoetis bats, known as the "most beautiful bats".
This species is relatively rare, with only 64 records currently in the Global Biodiversity Information Platform (GBIF) database. The species is listed as "vulnerable "(NIBR 2012) and" rare "(National Committee for the Korean People and Biosphere 2002) on the relevant Red Lists of South Korea and North Korea. The species is rated "not at risk" (LC) in the 2018 IUCN Red List assessment.
