Official Journal of the Lepidopterists' Society of Africa
Metamorphosis Volume 8 (1997), Metamorphosis Volume 8, Issue 6: 4 - 10
Publication Date : 1997-12-31
Author/s : Michel Libert

Title :

Biodiversity and orophily on the Cameroon Highlands

Abstract :

Orophily is defined, and several examples are given of the difficulty of asserting the orophilic character of a given species. Data published in 1991 on the butterfly fauna of the Cameroon Highlands is updated and confirms both a relatively low diversity and a surprisingly low proportion of orophilic species. The very low degree of differentiation of at least 75% of these species indicates a recent isolation; the term “Cameroonian oro-endemic” is defined and shown to apply to only about 13% of orophilic species. A comparison between these two groups suggests that the hypothesis of a continuous montane forest belt across the continent is not necessary to explain the present disjunctions in the distribution of orophilic butterflies.

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