The Find-a-Spider Guide

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Ant-mimicking spider

Fact Box
Myrmarachne species (QM)
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
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Another female
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Another view
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Another species?
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Front 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. Note that the colour of Myrmarachne species seems to vary, at least partly, with the colour of the ants they are running with.

Spider(s) with a very similar appearance: Myrmarachne erythrocephala.

Email Ron Atkinson for more information.    Last updated 21 Decembber 2016.