Erebia orientalis Elwes, 1900


Erebia orientalis: Male (Bulgaria, Rila, early August 2013, 2200m asl) [N] Erebia orientalis: Male (Bulgaria, Rila, early August 2013, 2200m asl) [N] Erebia orientalis: Male (Bulgaria, Rila, early August 2013, 2200m asl) [N] Erebia orientalis: Male (Bulgaria, Rila, early August 2013, 2200m asl) [N] Erebia orientalis: Female (Bulgaria, Rila, early August 2013, 2200m asl) [N] Erebia orientalis: Female (Bulgaria, Rila, early August 2013, 2200m asl) [N] Erebia orientalis: Female (Bulgaria, Rila, early August 2013, 2200m asl) [N] Erebia orientalis: Male (e.o. rearing, Bulgaria, Rila Mountains, 2300m, oviposition in early August 2015) [S] Erebia orientalis: Male (e.o. rearing, Bulgaria, Rila Mountains, 2300m, oviposition in early August 2015) [S] Erebia orientalis: Egg (e.o. Rila mountains 2013) [S] Erebia orientalis: Egg after some days (e.o. Rila mountains 2013) [S] Erebia orientalis: Egg after some days (e.o. Rila mountains 2013) [S] Erebia orientalis: Egg after some days (e.o. Rila mountains 2013) [S] Erebia orientalis: Hatched larva (e.o.Rila mountains 2013) [S] Erebia orientalis: L1 larva (e.o. Rila mountains 2013) [S] Erebia orientalis: L1 larva (e.o. Rila mountains 2013) [S] Erebia orientalis: L1 larva (e.o. Rila mountains 2013) Erebia orientalis: L2 larva (e.o. Rila mountains 2013) [S] Erebia orientalis: L2 larva (e.o. Rila mountains 2013) [S] Erebia orientalis: Young larva (e.o. Rila mountains 2013) [S] Erebia orientalis: Young larva (e.o. Rila mountains 2013) [S] Erebia orientalis: Half-grown larva (e.o. Rila mountains 2013) [S] Erebia orientalis: Half-grown larva (e.o. Rila mountains 2013) [S] Erebia orientalis: Larva (e.o. rearing Bulgaria, Rila Mountains, 2300m, oviposition in early August 2015) [S] Erebia orientalis: Larva (e.o. rearing, Bulgaria, Rila Mountains, 2300m, oviposition in early August 2015) [S] Erebia orientalis: Larva (e.o. rearing, Bulgaria, Rila Mountains, 2300m, oviposition in early August 2015) [S] Erebia orientalis: Larva (e.o. rearing, Bulgaria, Rila Mountains, 2300m, oviposition in early August 2015) [S] Erebia orientalis: Larva (e.o. rearing, Bulgaria, Rila Mountains, 2300m, oviposition in early August 2015) [S] Erebia orientalis: Larva (e.o. rearing, Bulgaria, Rila Mountains, 2300m, oviposition in early August 2015) [S] Erebia orientalis: Larva (e.o. rearing, Bulgaria, Rila Mountains, 2300m, oviposition in early August 2015) [S] Erebia orientalis: Larva (e.o. rearing, Bulgaria, Rila Mountains, 2300m, oviposition in early August 2015) [S] Erebia orientalis: Fresh pupa (e.o. rearing, Bulgaria, Rila Mountains, 2300m, oviposition in early August 2015) [S] Erebia orientalis: Fresh pupa (e.o. rearing, Bulgaria, Rila Mountains, 2300m, oviposition in early August 2015) [S] Erebia orientalis: Fresh pupa (e.o. rearing, Bulgaria, Rila Mountains, 2300m, oviposition in early August 2015) [S] Erebia orientalis: Pupa (e.o. rearing, Bulgaria, Rila Mountains, 2300m, oviposition in early August 2015) [S] Erebia orientalis: Pupa (e.o. rearing, Bulgaria, Rila Mountains, 2300m, oviposition in early August 2015) [S] Erebia orientalis: Pupa (e.o. rearing, Bulgaria, Rila Mountains, 2300m, oviposition in early August 2015) [S] Erebia orientalis: Habitat in the Rila mountains in Bulgaria in early August 2013. [N] Erebia orientalis: Habitat in the Rila mountains in Bulgaria in early August 2013. [N] Erebia orientalis: Habitat in the Rila mountains in Bulgaria in early August 2013. [N] Erebia orientalis: Habitat in the Rila mountains in Bulgaria in early August 2013. [N] Erebia orientalis: Habitat in the Rila mountains in Bulgaria in early August 2013. [N] Erebia orientalis: Habitat in the Rila mountains in Bulgaria in early August 2013. [N]

Host plants:
Poaceae, e.g. Nardus stricta and Festuca.

Habitat:
Erebia orientalis inhabits alpine pastures and grassy slopes which are often interspersed with shrub (Pinus, Juniperus). I met Erebia orientalis together with Erebia rhodopensis at the same mountain slope in the Rila mountains, but in slightly lower altitudes and at more shrubbery places.

Life cycle:
The adults appear in July and August. The often visit flowers (Thymus, Dianthus etc.). The caterpillar presumably hibernates twice and should be mature in June.

Endangerment factors:
Erebia orientalis is probably at low risk at the moment. But potential threats may be climatic change or future touristic facilities as well as overgrazing.

Remarks:
Erebia orientalis is endemic to the Balkan peninsula and is there almost restricted to west Bulgaria (Pirin and Rila mountains mostly between 1900 and 2700m asl).



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