In France, new species described since the late 1990 are four in number, Pipistrellus pygmaeus, Plecotus macrobullaris, Myotis alcathoe and Myotis escalerai . Field, these species are not always easy to differentiate from their species 'sister', morphologically very similar . Harvesting joint morphological data, Genetic and echolocation is an essential step towards a better understanding and recognition of the species present on our territory . While recognition of two species among pipistrelles communes (Pipistrellus pipistrellus and Pipistrellus pygmaeus) dates back over 10 years, discrimination morphological of both species is not always obvious, see sometimes even difficult . Numerous criteria morphological allowing discrimination between two species were deferred ('Y' alar, ratio of phalanges, hump between the nostrils, etc.) but it seems that none of them does either reliable to 100% in the whole of the range of both species (obs . pers.).
Kuvuna data pamoja kubadilika kwa maumbile, Maumbile na echolocation ni hatua muhimu kuelekea kuelewa na kutambua aina ya sasa katika nchi yetu. Wakati utambuzi wa aina mbili katika pipistrelles ya kawaida (Pipistrellus pipistrellus na Pipistrellus pygmaeus) ulianza zaidi ya 10 miaka, Kubadilika kwa maumbile ubaguzi wa aina mbili daima si dhahiri, wakati mwingine vigumu kuona. Wengi vigezo kubadilika kwa maumbile kwa ajili ya kubagua aina mbili na kuripotiwa ('Y' alaire, uwiano de phalanges, hump kati ya puani, nk) lakini inaonekana hakuna hata mmoja wao ni wa kuaminika 100% katika aina mbalimbali mbili (obs. Pers.).