Lang's Short-tailed Blue
Syntarucus pirithous
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Leptotes pirithous

Female, Andalucía, July 2017

Leptotes pirithous

Female, Andalucía, July 2017

Leptotes pirithous

Barcelona, July 2017

Málaga, March 2011



Málaga, March 2011



Female, Spain, July 2011

Female upperside, Portugal, 1991

Male underside, Val d'Aran

Lang's short-tailed blue is widespread and common in southern Europe. It is a bit of a jinx butterfly for me, at least so far as getting pictures is concerned, but these photographs do at least give an idea of what it is like. The male resembles a long-tailed blue, with a shorter tail and lacking the single, strong spot near the tail on the upperside. The female is more marked on the upperside than female long-tailed blue. Both sexes share the unmistakeable, rippled underside.

The range is similar to long-tailed blue but is generally more southerly. I have never seen the species in Switzerland.