insectaworld.com

LEPIDOPTERA

Euchloe (creusa) orientalis (Bremer, 1864)

Euchloe (creusa) orientalis

• TYPE LOCALITY. "Amur".

• RANGE. From the Altai Mts. across the whole of Siberia to the Chukot and Ussuri regions.

• DISTRIBUTION AND VARIATION. The nominate subspecies Hies in Transbaikalia, the Amur region and the Far East(?); besides that, the following subspecies have been described: ssp. emiorientalis Verity, 1911 - the Altai and Sayan mts.; ssp. kurentzoui Beljaev, 1986 - N. Siberia, the Chukot Peninsula, the Far East; ssp. nemoralis Beljaev, 1986 - the Ussuri region.

• TAXONOMIC NOTES. It seems probable that the ssp. kurentzovi Beljaev may prove to be a good species, if information about its sympatry with the typical orientalis in the Magadan region appears to be true.

• HABITATS AND BIOLOGY. Various types of tundras and moors. Flight period: April-July. Host plants in N. America (Scott, 1986): Sisymbrium, Draba cana, Turritis glabra; in the Ussuri region (Belyaev, 1986; Danchenko, Streltsov, in press): Cardamine trifida, Dontostemon dentatus, Draba nemorosa.

• SIMILAR SPECIES. E. naina: larger; UNH white pattern composed of angular spots, without delicate stripes.

Photo and text: Guide to the BUTTERFLIES OF RUSSIA and adjacent territories Volume 1. PENSOFT, Sofia - Moscow. 1997