The ants:
(1) are large (3 cm or more)
(2) have large mandibles
(3) are aggressive
(4) may be able to jump onto intruders
(5) may pursue an intruder for some distance
Classification: genus Myrmecia
Jumper (jack jumper) ants: M. pilosula, M. ludlowi
Bull ants (bull dog) ants: M pyriformis, M. gratiosa, M. gulosa
The toxin of these ants is composed of a mixture of compounds, such as histamine, hyaluronidase, and phospholipase A.
Risk factors for serious injury:
(1) envenomation from a large number of ants
(2) anaphylactic reaction to the venom
(3) serious comorbid conditions in the victim
