jack jumper
noun1
Australia Any of various small species of ant of the genus Myrmecia, often capable of jumping and having a painful sting.
- Glancing back at Hordern's gravestone, I saw that the absent metal letters exposed a pattern of nail holes like woodworm. A jack-jumper ant crawled over his age – he was 63 – and disappeared into the nettles.2004, Nicholas Shakespeare, In Tasmania, Harvill Press, p. 261