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Altitude-dependent variation in wing pattern in the Corsican Butterfly Coenonympha corinna Hübner (Satyridae)

Auteurs : Brunton (Clair F.a.), Baxter (J.d.), Panchen (Alec Leonard) et Quartson (J.a.s.)


Année de publication : 1991
Publication : Biological Journal of the Linnean Society
Volume : 42
Fascicule : 3
Pagination : 367-378


Résumé :

The Corsican heath butterfly, Coenonympha corinna Hubner, is endemic to Corsica and Sardinia. It is described as differing from its sister species from Elba, C. elbana Staudinger & Rebel, in the number and development of post-discal spots on the wings, particularly on the ventral surface of the hind wing. But spot number is variable in C. corinna as it is in the north-south cline in British populations of the related C. tullia. Samples of C. corinna taken from 15 localities over a range of altitudes in Corsica in 1988 corroborate the hypothesis that there is an altitude-dependent cline in hind-wing spot number, with lowland specimens approaching the C. elbana condition. This is probably also true of spot size and development. There is, however, no evidence of a north-south cline in any spot character