The University of Southern Queensland

Home    Spider Info    Find-a-spider    About
Find a spider by...     common name     location       species       family       webs and egg sacs     photos

Western brown trapdoor

Fact Box
Species:
Arbanitis species (QM)
perhaps Arbanitis variabilis
Family:
Idiopidae
formerly Ctenizidae
Body length:
female: 30 mm
male: 22 mm
Habitat:
In a burrow with a neatly fitting hinged door; males are mostly found above ground in Autumn
Toxicity:
Uncertain; likely to cause only mild illness in humans but should be handled with caution
Arbanitis species
Click to enlarge
The male palps

This trapdoor is usually found in black soil areas of the Darling Downs and can tolerate relatively dry conditions. The female rarely leaves the burrow but the mature males search for mates in large numbers during autumn and early winter. The male is a lighter brown than the more common Euoplos male and lacks the double spur on the inside of the tibia of the first pair of legs that Euoplos has. Males rear up when provoked but do not readily yield venom as funnel-web spiders do.

Spider(s) with a very similar appearance: Euoplos species and Misgolas pulchellus.



Email Ron Atkinson for more information.    Last updated 7 February 2002.