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of the Lepidoptera of Belgium

Plebejus argyrognomon (Bergsträsser, 1779)

This species is now extinct in Belgium since a few decades. Formerly occuring in very small numbers in the province of Luxembourg.

The larva lives on Coronilla varia and Astralagus glycyphyllos. The larva is attended by different species of ants and hibernates. Pupates between vegetation.

The adults fly usually in two generations a year; from mid May till June, and from late June till July.   

France, Meuse, Stenay, 19 May 2007.
male - view underside (Photo © Chris Steeman)
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© Flemish Entomological Society