These groups represent potential species but the analysis of a larger number of samples from different sources is necessary before concluding. Otherwise, the study of Mayer et al. (2007) shows two Myotis sp. (identified as Myotis nattereri according to morphological criteria) from Austria and northern Italy who are genetically very divergent M. nattereri Central Europe. These individuals represent a potentially new cryptic species within the 'complex' M. nattereri.
Makundi haya kuwakilisha aina uwezo lakini uchambuzi wa idadi kubwa ya sampuli kutoka vyanzo mbalimbali ni muhimu kabla ya kukata. Vinginevyo, Utafiti wa Mayer et al. (2007) inaonyesha mbili Myotis sp. (kutambuliwa kama Myotis nattereri kulingana na vigezo kubadilika kwa maumbile) kutoka Austria na Italia ya kaskazini ambao ni vinasaba sana mbali mbali M. nattereri d'kati Ulaya. Hawa watu kuwakilisha uwezekano wa aina mpya cryptic ndani ya 'tata' M. nattereri.