BBC Wildlife Magazine - - Wild July -

Us­ing pheromones to at­tract a mate.

A num­ber of other Bri­tish but­ter­flies have sim­i­lar sex scales. In some species they are wo­ven into the patch­work of scales that cover the en­tire sur­face of the wing, while in oth­ers, like the sil­ver-washed fritillary, there are very ob­vi­ous con­cen­trated an­dro­co­nial patches. Look out for the dark smudges on the forewing of the male gate­keeper, the thick bold lines on the wings of mem­bers of the skip­per fam­ily ( pic­tured), and the dark suf­fu­sion on the wings of the male grayling – an­other but­ter­fly fa­mous for its dance.

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