not having found females, refrains from making a further taxonomic decision. He only collected male specimens. He advances the theory in this work, that the D. pumila moths studied by Staudinger were in fact two species, with the males in fact being D. selenophora. According to Staudinger in 1901, and later Kozhanchikov in 1950, Grum-Grshimailo was erroneous when referring to the Staudinger's plates of male D. pumila for his male D. selenophora specimens in his 1890 work. In 1892 William Forsell Kirby eventually classified it in the new genus Dasyorgyia anyway, together with the species previously known as Dasychira pumila. In his 1901 catalogue of Palearctic Lepidoptera, Staudinger then followed Kirby in classifying the species in the genus Dasyorgyia. Embrik Strand, in 1912 (Kozhanchikov gives the date 1910, this is likely a mistake), described Dasyorgyia pamiricola, which was synonymised with this species before 1950. In 1950 Kozhanchikov classified it in the genus Gynaephora, synonymising the genus Dasyorgyia to Gynaephora. In 1981 Karel Spitzer and Karel Černý published the rediscovery of the species by Černý in the high mountains of the Central Asian part of the USSR. They classified it in subgenus Dasyorgyia of the genus Gynaephora. Karel Spitzer reiterated this subgeneric classification in a 1984 paper, in which he also synonymised the new Chinese taxon G. ruoergensis with this species. In 2008 Tatyana A. Trofimova reclassified G. pumila as Dicallomera pumila. Because this was the type species of the subgenus Dasyorgyia, she was also obliged to reclassify Gynaephora selenophora and some other species, and ended up transferring the rest of the subgenus Dasyorgyia to the hitherto monotypic genus Lachana. Distribution It has been photographed in the Pamiro-Alai near Fergana. As of 1984 it had been collected in the Alay Mountains ("Archa-bakhi"); in the Zaalaisk Mountains at the Kyzylart Pass in Kyrgyzstan on the border between Gorno-Badakshan province in Tajikistan and Osh Province, Kyrgyzstan; in the Pamir Mountain proper at a place called "Kara-kuzun" and at Beyik Pass, at 4200m elevation, in far eastern Gorno-Badakshan, leading to the Taghdumbash Pamir region of Xinjiang; and in the Hindu Kush. The distribution has often been stated to include to the Fergana Region, Uzbekistan, because the first two specimens were sent by a man living in the city of Margilan, however it is not made clear that these specimens were collected locally. I. Chernavina also collected a specimen on the Pereval Tegarak pass, Jalal-Abad