Couteyen S. & Papazian M. 2012
[Deliry C. 2026] – Couteyen S. & Papazian M. 2012 - In : Odonates du Monde (Histoires Naturelles) (2004-[2026]) – Version 82691 du 15.07.2026. – odonates.net
|
Couteyen S. & Papazian M. 2012 - Catalogue et affinités géographiques des Odonata des îles voisines de Madagascar (Insecta : Pterygota). - Ann. soc. entomol. Fr., (n.s.) 48 (1/2) : 199-215. - BiB
Abstract
Catalogue and geographical affinities of the Odonata of the neighboring islands of Madagascar (Insecta: Pterygota). A thorough bibliographic analysis shows that 71 species and sub-species of Odonata are recorded in the neighboring islands of Madagascar, from the archipelagos of Mascarenes, Comoros and Seychelles. In these islands, the maximum endemism rate is about 34%, but more significant in Mascarenes (34%) than in Comoros (23%) or in Seychelles (19%). The odonatological fauna is dominated by the Libellulidae (36 taxa) and Coenagrionidae (18 taxa). Each archipelago owns at least one of the 23 endemic taxa found in these islands. Seychelles have two endemic monospecific genera: Allolestes et Leptocnemis. Mascarenes have two endemic genera: Thalassothemis and Coenagrionocnemis. The last one demonstrated a progressive radiation in the archipelago. The neighbouring islands of Madagascar are characterized by a radiation of two genera at regional level, viz Hemicordulia and Gynacantha. The geographical affinities of this fauna are mainly Afrotropical. Colonization from Africa is not a random sample of the continental pool, but a selection of a few species with specific abilities. In the neighbouring islands of Madagascar, the specific richness of the populations of Odonata with African affinities decreases with the geographical isolation.
