Liocheles waigiensis

Male Liocheles display much longer chela(hands), than females, which we call a sexual dimorphism. This means that males with longer chela for some reason have greater success at passing on their genes than males with shorter chela in general, which leads to a sexual dimorphism or structural difference between the sexes.

The above photo shows a gravid female Liocheles. Notice here the chela are much shorter than that of the males. Other than this the two are sexes are very similar. One other distinctive sexual dimorphism in this species occurs on the males fingers...as below

In this image the tooth and notch of the male can be clearly seen. This adaptation may well be used during the males manipulation of the female in the mating procedure. See the features section for a discussion of mating in scorpions.