twins Crocea de colias
|Copyright: john vantighem (john1)
|Date Taken: 2009-07-28|
|Photo Version: Original Version|
|Date Submitted: 2009-07-29 4:46|
|[Note Guidelines] Photographer's Note|
|This is a very attractive butterfly which like many migratory species appears in May/June and returns in great numbers in September and later. Having seen so many Bergers Clouded Yellows (C. alfacariensis), including many quite bright yellow ones, I am no longer 100% certain of identifying these two species accurately without a good look. Just to confuse the issue, the crocea female has a white form (the white is only visible on the unf) known as helice, which makes up about 10% of the female population (although it seems rather more than this in Var), and the female alfacariensis unf is also white.|
1025: a more typical crocea, a strong pink edging to both wings. Altitude 185m.
3909: a rather dirty ground colour (altitude effect?) even though the specimen is quite fresh, and delicate slightly pink edging to both wings (I've never noticed this before - maybe it's an advantage of the close-up shot). There are no upf apical markings visible through the wing indicating male, and the hindwing margin is quite straight which also confirms male. The unh discal spot is very large and heavily ringed and silvery inside, and the second, usually vestigial, spot is large. Altitude 1800m.
6666: a male crocea taking salts. Altitude 330m.
13707: a male. Altitude 750m.
6719: a female of the form helice. It is sometimes considered that helice makes up about 10% of the UK population of female crocea, although my experience suggest that that percentage is higher in southern France. ID is not a problem in the UK as there is nothing similar, but in France the female Bergers Clouded Yellow (C. alfacariensis) is white and looks, at least superficially, very similar. I originally thought that 6719 was alfacariensis, but on studying the markings, I believe it to be helice. The underside is 6731. Altitude 1000m.
6721: the underside of 6719. The pastel yellow of the unf indicates crocea var helice, whereas the female alfacariensis is white in this area. Altitude 1000m.
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- [2009-07-29 4:54]
Very good macro!
Interesting shot of a mating pair, but not Gonepteryx rhamni I'm afraid. These are Clouded Yellows, Colias crocea. Thanks for posting and welcome to TN.