Monday, 4 June 2012

Sexually dimorphic flies?

When we found these flies mating at Flitwick Moor today they appeared so dissimilar as to be different species, but the wing venation is very similar, so it's probably just an extreme form of sexual dimorphism.

...Alan Outen has since determined these to be male and female Chrysopilus cristatus - thanks Alan!

Taken on Ricoh CX6.

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