Friday, 12 July 2019

One for Colin

I have this on my blog which I suspect is a the Ringlet aberration:  caeca

Anybody any ideas?

4 comments:

Colin D said...

Very Observant Charlie . I agree with your finding . likely caeca

ab. caeca (Fuchs.Ent.Z.1884.45.p.252.)
Underside of the forewings devoid of any sort of spots, the hindwings with some feebly indicated. A transitional form to ab. arete Muller.

I have netted about 250 Ringlets in one pasture and there has been little variation seen in terms of aberrants as yet principally looking for the ab lanceolata - which is one with the elongated spots

I have just posted some pages https://florafaunauk.blogspot.com/ on the aberrant forms of other species which is taking a little time - Can I include your find to illustrate this aberaant C

Colin D said...

Addenda

In the absence of a rear view I'd also consider

ab. obsoleta (Tutt.Brit.Butts.1896.p.412.)
Underside with no trace of the usual ocelli

or an umclassified aberrant Type specs are poorly documented

Having said that there is a fair match to obseleta in the Cockayne Collectiion see link above

charlie streets said...

Yes, you can use the image as you see fit Colin.

So still a possible/maybe then. I think I'll leave these variants for the experts!

Colin D said...

Its not an exact science and aberations tend to be collated over the years accross various taxonomical changes names and authors from a variety of countries to add to the confusion and their now exist potentially unclassified aberrations at this point in time I would have a punt on obsoleta (cf the one in the Cockayne ) I'll seek a second opinion and let you know what others think and ammend accordingly front and rear views of the front and hind wings often help but is rarely feasible in the field but the bottom line its a good find in this respect and a Ringlet (for sure !!)