 The glans penis is pointed toward the end and rod-shaped.The measurements of "V. finlaysoni" for the head and body combined are 34 to 46 mm, forearm precisely 29.8 to 36.7 mm, tail 31 to 42 mm long, and the ear from the notch to tip is 9 to 13 mm; the average weight is 4.3 g for a measured range of 2.8 to 6.3 grams.The penis morphology and reddish colour of the fur distinguish "Vespadelus finlaysoni" from similar species.