The Find-a-Spider Guide

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Brush-footed trapdoor

Fact Box
Idiommata iridescens (RM)
or a closely related species
Previous species name:
Lampropodus iridescens
Body length:
female: 33 mm
male: 24 mm
The females live remain in a burrow in the ground but adult males wander above ground during the warmer months
May be significantly toxic to humans
Idiommata iridescens
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A damaged male
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The male
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Its carapace
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Underneath male

The body of this species is a reasonably uniform dark colour and the claw tufts and iridescent tarsal brushes on the legs are distinctive. Not too much is known of its natural history, but the burrow is said to be fitted with an inwards opening door.

The males of this species should be treated as potentially dangerous since the few tests that have been done on the venom of this species suggest it may have a toxicity not much less than that of funnel-web and mouse spiders.

Known Range: This is mostly found in inland locations adjacent to Cairns and down to the NSW border.

Spider(s) with a similar appearance: Euoplos species, Aname barrema, Hadronyche infensa, Namea salanitri, and Paraembolides boycei.

Email Ron Atkinson for more information.    Last updated 4 January 2022.