Core Viewpoint - The rediscovery of the Beijing original stone moth, a species thought to be extinct since 1932, highlights the importance of biodiversity research and the potential for finding rare species in unexpected locations [1][4]. Group 1: Discovery and Identification - The Beijing original stone moth (Rhyacophila pepingensis Ulmer) was first discovered in Beijing in 1932 and had not been seen since, leading to its classification as potentially extinct after 50 years without sightings [1]. - In the summer of this year, entomologists in Wuhan collected specimens that included the original stone moth, which was confirmed by researcher Qiu Shuang through comparison with historical specimens [1][3]. - Qiu Shuang contacted the Hamburg Natural History Museum, where the original type specimen was stored, and found that it still existed after 93 years [2]. Group 2: Ecological Significance - The rediscovery of the Beijing original stone moth contributes valuable data to biodiversity studies in Wuhan, indicating that species can migrate over significant distances, as the area east of the "Huhuan Line" has fewer geographical barriers [4]. - Stone moths are sensitive to water quality, making them effective bioindicators for assessing ecological health; waters with a higher diversity of stone moths are generally in better condition [4]. - The global diversity of the order Trichoptera (stone moths) exceeds 16,000 species, with the Dabie Mountain region noted for its rich resources of these insects [4].