The Find-a-Spider Guide

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Ant-mimicking spider

Fact Box
Myrmarachne species (QM)
(apparently an undescribed South Queensland species)
Body length:
female: 7 mm
male: 9 mm
Any surface where ants can be found, the spiders tending to run with ants along established ant pathways
A bite by this species may cause local inflammation
Myrmarachne species
Click to enlarge
Another female
Click to enlarge
Another view

The distinguishing feature of this species is the partial constriction of the cephalothorax and/or the abdomen into two segments to produce an ant-like body shape. The very large porrect (forward pointing) chelicerae on the male are another striking feature. The female's palps are long and thin with paddle-shaped ends. At least on some Myrmarachne species the cephalothorax appears to have a helmet-like shape.

It should also be pointed out that the taxonomy of the Australian Myrmarachne genus is currently being revised, the most recent example of this being the following paper: Pekar S., Petrakiva L., Corcobado G., and Whyte R. (2017) "Revision of eastern Australian ant-mimicking spiders of the genus Myrmarachne (Araneae, Salticidae) reveals a complex of species and forms" Zoological Journal of the Linnean Society, 197(3), 642-676.

Spider(s) with a very similar appearance: Many other Myrmarachne species.

Email Ron Atkinson for more information.    Last updated 2 July 2017.