Appearance
Identification & Similar species: A shining blue, it is of a deeper tone than the nominate subspecies. It also has broader black borders on the upper side. Superficially similar to the common blue, P. icarus, but the shade of blue and broad black borders are distinctive. The underside forewing frequently has a cell spot which is not always featured in the guide books.erotides Styr. , from the mountains of Southern Siberia, is a large, blue-green male form, with broad black distal margin to the forewing, into which the deep black veins merge.
Behavior
The larva feeds on Fabaceae.References:
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