Erebia rossi Curtis in Ross, 1834.
In the Altai Mountains this is, perhaps, the most highland species, not as reaching the highest altitudes (these are Parnassius phoebus and Aporia crataegi who does this) but having the highest lower limit of about 2500 m above sea level. It flies among large stoned screes and moraines of the stepped back glaciers.
Range: Polar regions of Eurasia from the Pechora River to Chukotka, the mountains of the temperate Eurasia south to Mongolia and N Korea, the northern North America.
Ssp.: erda Sheljuzhko, 1924: range: the Altai Mts.
A large stoned ancient moraine in the source of the rivulet descending from the southerm principle slope of the Yuzhno-Chuiskii mountain range between the Chikty and Akbul Rivulets, 2700 m above sea level, the upper Dzhazator River basin, Kosh-Agach District, Altai Republic, West Siberia, Russia. 11th July 1998. O. Kosterin.
На Алтае это самая высокогорная бабочка - не проникающая до наибольших высот (как феб Parnassius phoebus и боярышница Aporia crataegi), но имеющая наивысший нижний предел распространения около 2500 м. Щна летает по крупнокаменистым осыпям и моренам.
Ареал: полярные области Евразии от р. Печора до Чукотки, горы умеренной Евразии на юг до Монголии и Северной Кореи, север Северной Америки.
Ssp.: erda Sheljuzhko, 1924, ареал: Алтай.

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