Cauchas Zeller, 1839

Genus Cauchas Zeller View in CoL

Type species. Tinea fibulella ([Denis & Schiffermüller], 1775), by subsequent designation by Fletcher (1929).

Distribution. Palaearctic: Europe; Russia (European part, south of West Siberia, Far East); West ( Turkey, Armenia) and Central ( Kazakhstan, Kyrgyzstan, Uzbekistan, Turkmenistan) Asia; Nearctic: Canada, USA ( Nielsen & Johansson 1980; Kozlov 1994, 1997, 2024c; Kuprijanov 1994; Korb 2016; Bryner 2020; Davis & Medeiros 2023).

Remarks. The world fauna of the genus includes 32 species, half of which are distributed in the Old World with the greatest species diversity in Europe (nine species), and the other half are found in the New World, where the Cauchas spp. inhabit the North America. The fauna of Russia includes seven species, three species of which known from European part only ( Cauchas florella (Staudinger) , C. leucocerella (Scopoli) , C. rufifrontella (Treitschke)) , two species reach the south of West Siberia ( C. fibulella ([Denis & Schiffermüller]), C. rufimitrella (Scopoli)) , one species was described from Altai Republic and so far known only from this locality ( C. mikkolai Kozlov ) and one species ( C. breviantennella Nielsen & Johansson ) has been reported from arctic (Murmanskaya oblast’ and Yamalo- Nenetskii Avtomnyi Okrug) and subarctic (Magadanskaya oblast’) geographic zones. The species of the genus Cauchas so far remain unknown from East Asia and south of the Russian Far East, thus the new species is the first one described from this territory.