Myrmarachne Plataleoides - Sexual Dimorphism

Sexual Dimorphism

Kerengga Ant-like Jumpers are sexually dimorphic. Female jumpers, measuring about 6–7 mm, are the best mimics of the weaver ants while the males which usually measure about 9–12 mm in length give the appearance of a weaver ant carrying a minor worker due to their elongated chelicerae which may be as long as one-third to half their body length. These elongated chelicerae are a secondary sexual characteristic of the males. The males use their long fangs like swords to fight off rivals. They can split their jaws, normally held closed, to unfold their fangs when required.