Portugese Blue?

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Wurzel
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Portugese Blue?

Postby Wurzel » Fri Sep 08, 2017 9:56 pm

I took this shot and a few others in August 2016 in Lisbon. At the time I thought that it was a Common Blue but I felt there was something different about it which I couldn't put my finger on...is it just a Common Blue? Any help greatly appreciated?

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Wurzel

Chris Jackson
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Re: Portugese Blue?

Postby Chris Jackson » Tue Sep 12, 2017 8:53 am

Hi Wurzel,
I think the answer lies in the 2 key identifiers : plain fringe and presence of underside forewing cell spot.
If this had been seen in France there could only be two possibilities : P. icarus and P. eros.
Knowing that, and lacking an upperside view or recollection of striking upperside colours, geographical and altitude distribution may then reduce the possibilities. I am at work and don't have any books with me. We now need to know what flies in Portugal with these 2 criteria.
Cheers,
Chris
Last edited by Chris Jackson on Fri Sep 15, 2017 4:33 pm, edited 1 time in total.
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Padfield
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Re: Portugese Blue?

Postby Padfield » Tue Sep 12, 2017 11:09 am

Yes - this is icarus, subject to the qualification that the distribution of Polyommatus celina is poorly known and might, conceivably, extend to Portugal. Current maps don't have it there, though.

Guy
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