A female common blue buttefly, Polyommatus icarus (Lepidoptera: Lycaenidae). The females of this species have much less blue on them than the males do.
Photos taken in Whiteknights Park, Reading, University grounds, Reading, UK on 2009-07-22.
Here are some photos I have just taken of a male common blue butterfly:
Both of these photos were taken in Whiteknights Park, Reading University grounds on 2009-07-27.
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