The Find-a-Spider Guide

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Unknown idiopid

Fact Box
Unknown idiopid
(similar to Arbanitis longipes but with distinctive colour and locality differences)
formerly Ctenizidae
Body length:
female: 30 mm
male: 22 mm
Males are mostly found above ground in Autumn; the female is unknown
Venom toxicity uncertain; spider should be handled with caution
unknown idiopid
Click to enlarge
Male from side
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Underneath male
Click to enlarge
The male palps

This spider is usually found in black soil areas of the Darling Downs south-west of Toowoomba. Males are found during autumn and early winter but not in the large numbers that are typical of the Toowoomba Euoplos trapdoor species. The male is golden brown whereas the more common Euoplos male is a dark chocolate colour. In addition, it does not have the double spur on the inside of the first pair of legs that Euoplos has. This lack of a spur is also a characteristic of Arbanitis longipes but the spider shown here is slightly larger and has a forward curving (U-shaped) fovea on its capapace whereas that of A. longipes is straight.

Spider(s) with a very similar appearance: Arbanitis longipes, Euoplos species, Euoplos variabilis flavomaculata and Misgolas species.

Email Ron Atkinson for more information.    Last updated 9 November 2017.