▁it ▁into ▁two ▁species : ▁The ▁smaller ▁( up ▁to ▁about ▁ ▁in ▁length ) ▁southern ▁D . ▁c f . ▁fl oss ada ▁( blue ▁sk ate ), ▁and ▁the ▁larger ▁and ▁slower - g row ing ▁northern ▁D . ▁c f . ▁inter med ius ▁( f la pper ▁sk ate ). ▁Under ▁this ▁tax onom ic ▁arrangement , ▁the ▁name ▁D . ▁bat is ▁is ▁disc arded . ▁Alternatively , ▁the ▁scientific ▁name ▁D . ▁bat is ▁( with ▁fl oss ada ▁as ▁a ▁ ▁syn onym ) ▁is ▁retained ▁for ▁the ▁blue ▁sk ate ▁and ▁D . ▁inter med ius ▁for ▁the ▁fla pper ▁sk ate . ▁A ▁formal ▁request ▁of ▁pres erving ▁the ▁name ▁D . ▁bat is ▁( with ▁fl oss ada ▁as ▁a ▁syn onym ) ▁for ▁the ▁blue ▁sk ate ▁has ▁been ▁submitted ▁to ▁the ▁International ▁Commission ▁on ▁Zo ological ▁N omen cl ature , ▁but ▁as ▁of ▁ 2 0 1 7 ▁a ▁decision ▁is ▁still ▁pending . ▁ ▁Based ▁on ▁mole cular ▁ph y log en et ics , ▁D . ▁c f . ▁inter med ius ▁is ▁very ▁close ▁to ▁D . ▁o xy rin chus , ▁while ▁the ▁relationship ▁to ▁D . ▁c f . ▁fl oss ada ▁is ▁more ▁distant . ▁ ▁D . ▁c f . ▁inter med ius ▁has ▁dark ▁o live - green ▁eyes ▁and ▁the ▁bl ot ch ▁on ▁each ▁wing ▁consists ▁of ▁a ▁group ▁of ▁pale ▁sp ots . ▁D . ▁c f . ▁fl