The male has an almost spherical abdomen.
The abdominal humps are largely flattened against its surface.
The male used to describe Austrarchaea woodae was 3.54 mm long, while the femur of its first leg measured 3.74 mm. The bulb at the tip of its pedipalp, an appendage near the mouth, has an apple-shaped outline when viewed from below.
The study compared this spider with another species on the same mountain. The male holotype was collected at Boulder Caves, Mount Bartle Frere, at 1,050 metres on 8 December 1990. Females collected nearby were considered to belong instead to Austrarchaea daviesae.
The 2012 paper cited their projecting abdominal humps, contrasting with the low, recumbent humps of the woodae male, together with similarities in carapace shape and genitalia to daviesae. The authors suggested that woodae was much rarer than daviesae below about 1,000 metres and might be restricted to higher montane rainforest. Comparing spiders from the same mountain raised a question about their distribution along the elevation gradient.
An extinction-risk assessment has not been added yet.
The collecting locality is in Wooroonooran National Park. Its 2013 management statement, extended in 2024, includes ecosystem and significant-species monitoring, pest management, and monitoring forest responses to planned burns and wildfire. The 2012 spider account lacked information to assess conservation status. Surveys at different elevations would help establish the information needed for species-specific conservation.