It was disputed that Ficedula parva parva
were two species or two subspecies.Complete sequences of mitochondrial cytochrome b gene were used as a genetic marker to study the taxonomic status of them.The genetic distance between F.P.Albicilla
was 6.3% based on the Kimura's two Parameter's method,which was far more than the genetic distance between other species of Ficedula
.The results suggest that F.P.Albicilla
should be two species,their names are F.Albicilla
separately,and the divergence time between F.P.Albicilla
is 3.15 to 3.25 My.