20
Aug
22

Aberration

The Chilterns is a wonderful place for butterflies. One of the reserves we called at was Aston Rowant NNR. The reserve slopes are great for Silver Spotted Skipper, and we saw many of them. However, it wasn’t just about one species … we managed 15 in all, including Adonis Blue, Brown Argus in spades as well as Brown Hairstreak which is the first time I’ve seen it there. It’s ironic really as on the following day I ran a Brown Hairstreak tour when we didn’t see any at all. However, as I’ve constantly reiterated to those that follow this blog and come on the tours … there’s always something to look at.

Perhaps the best find at Aston Rowant, for me, was an aberrant Chalk Hill Blue. I find these variations to the norm fascinating – as yet I’ve not been able to tie it down to type and give it a name (possibly Ab. postico-obsoleta) but I’m sure someone out there will be able to; although there are more than four hundred named varieties of this beautiful species (Russwurm, 1978)

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