 The length of the penis is small and it has as an angular bend, the tip is not enlarged.The larger size of the "Vespadelus darlingtoni" distinguishes it from others of the genus, the forearm length being greater than 33 mm, in particular the similar species "V. pumilus" (eastern forest bat).The richly coloured chocolate wattled species "Chalinolobus morio" is separable by the absence of that species lobe at the lower lip and raised fur between the eyes.