Eugrumia, Della Bruna, Gallo, Lucarelli & Sbordoni, 2000

Eugrumia Della Bruna, Gallo, Lucarelli & Sbordoni, 2000 is a junior subjective synonym of Sinerebia Nakatani, 2017, which is a sister genus of Paralasa Moore, 1893 ( Satyrini : Ypthimina )

Entirely dark-brown butterfly Erebia atramentaria Bang-Haas, 1927 (type locality China: Gansu Province, Qinling Mountains, Datong River, syntype sequenced as NVG-22126F02) visually similar to a better-known Erebia magdalena Strecker, 1880 (type locality in USA: Colorado, Clear Creek Co.) has been kept in its original genus Erebia Dalman, 1816 (type species Papilio ligea Linnaeus, 1758 ), the type genus of the subtribe Erebiina Tutt, 1896 , since its description until it was designated the type species of Sinerebia Nakatani, 2017, a genus sometimes synonymized with Erebia . Genomic phylogeny places a syntype of Sinerebia atramentaria as a close sister to Eugrumia herse (Grum-Grshimaïlo, 1891) (type locality in China), which is the type species of the genus Eugrumia Della Bruna, Gallo, Lucarelli & Sbordoni, 2000 in the subtribe Ypthimina Reuter, 1896 , not Erebiina ( Fig. 4 red), with the COI barcode difference of only 0.8–1.2% (5–8 bp), despite the remarkable difference in their wing patterns. Therefore, we confidently propose that Eugrumia syn. nov. is a junior subjective synonym of Sinerebia Nakatani, 2017. Sinerebia is sister to Paralasa Moore, 1893 (type species Erebia kalinda Moore, 1865 ) ( Fig. 4), and some of Sinerebia species were previously included in Paralasa , which is supported by the genetic similarity between the two genera, e.g., COI barcodes of their type species differ by 6.1% (40 bp). This small difference is more characteristic of subgenera than genera. However, pending further studies, we keep Sinerebia and Paralasa as distinct genera due to much closer relationships among species within each genus than between these genera ( Fig. 4).

We suspect that the absence of wing patterns in Sinerebia atramentaria hindered its taxonomic classification until it was revealed by genomic sequencing. Finally, to define the taxonomic identity of this species objectively, N.V.G. hereby designates a syntype in the MTD collection, a male with the following five printed labels, the 4 th yellow, and others white: [ Kansu sept.occ. | Hsining | Nanshan mont. | Tatung | 3500m. Juli], [Staudinger | Ankauf 1948], [711], [ atramentaria O. Bang-Haas, 1927 | Grishin ] as the lectotype of Erebia atramentaria Bang-Haas, 1927 . The lectotype has noticeable areas on wings with scales partially rubbed off and a small nick by the apex of the left forewing.