2- Pipistrellus pipistrellus / P . pygmaeus . Several morphological criteria discriminating the two species have been proposed but very few data are available on their reliability and validity in different regions .
2- Pipistrellus pipistrellus/P. pygmaeus. Kadhaa vigezo kubadilika kwa maumbile kubagua mbili aina zimependekezwa lakini wachache sana data za kutosha juu ya kutegemea zao na uhalali katika mikoa mbalimbali.