The Shield-backed Trapdoor Spider is dark brown to black, large (females up to 30 mm in body length) and with a distinctive thick and hard cuticle on the abdomen. The end of the abdomen is flattened into a shield and the sides are deeply corrugated. The burrows always have a lightweight, leaf litter and silk door, with leaf and twig trip-lines fanning out from the centre of the front of the burrow rim.
Shield-backed Trapdoor Spider |
Status: Vulnerable on the EPBC Act list
Government evidence of impact of climate change:
Australian Government, Conservation Advice, Idiosoma nigrum
Inappropriate fire regimes are also considered a potential threat to the species across its range (Main; 1957; 1991; 1992; 1995 Yen; 1995).
Australian Government, Listing Advice, Idiosoma nigrum
Inappropriate fire regimes may be a potential threat to the shield back spider.