The male and female lack projecting humps on the back of the abdomen.
The abdomen is nearly spherical in side view and mottled greyish brown and beige.
Male and female Zephyrarchaea melindae differ in the hairs on the front of their long jaws. The described male has a proximal brush and an additional comb of hairs. The described female lacks these accessory hairs on the front of the jaws.
A 2021 report documents a post-fire search for this species in the Stirling Range. Twenty-one sedge and montane-shrub sites were sampled in December 2020 and May 2021, with at least ten plants targeted per site.
Vegetation was beaten into a white tray, and suspended leaf material and ground litter were sieved and examined. The species was not detected within this survey. Field observations described regenerating plants that were still low, with little foliage and a general absence of suspended leaf material or ground litter.
An extinction-risk assessment has not been added yet.
The 2012 description estimated the known range at under ten square kilometres and identified fire, vegetation dieback and climate change as potential threats. The 2021 post-fire report recommends further surveys of undetected species as plants and leaf-litter microhabitats recover. For this spider, following the recovery of these small refuges while checking for continued occurrence could inform conservation.