They can be distinguished from the latter by the presence of a single jutting structure (process) on the syringe-like copulatory organ (embolus) of the bulb on the male pedipalps, in contrast to two in Carrai cave spiders.

The sternum (lower part of the cephalothorax) is elongated and shield-shaped with a pointed tip at the rear ending at the midpoint of the fourth leg pair.

They are complemented by dense forward facing bristles (setae) on the underside of the tarsus, which are particularly strongly developed on the first and second leg pair.

They possess large forward facing teeth on the cheliceral groove, three in females and four in males, evenly spaced from each other.

Very small backward facing teeth (denticles) are also present in a row on the basal half of the cheliceral groove, five in females and three to four in males.

The abdomen is fawn coloured in females with three dark-brown chevron shaped markings on the rear half.

In males, the abdomen is a light mauvish grey, with a pale stripe in the middle of the upper surface of the front half.

Webs have also been found near hollows in mountain ash (Eucalyptus regnans), the bases of tree ferns (Cyatheales), and even under bridges.

[1][2] Along with Progradungula carraiensis and Macrogradungula moonya, odd-clawed spiders are one of the only three species belonging to the family Gradungulidae that are cribellate.

[1] Unlike other members of the family which are all cursorial (active roving hunters), these three species are ambush predators that construct snares.

[3] The snares are made from silk spun from specialized spinnerets known as the cribellum, and combed with the row of bristles (the calamistrum) on their fourth leg pair.

Unlike normal spinnerets, the cribellum produces extremely fine silk that can easily entangle prey without the need for glue.

[3] The larger part of the odd-clawed spider's web is composed of a network of supporting threads built up to 2 m (6.6 ft) above the ground.

The spider spins the catching ladder in between them, composed of a loose irregular zigzag of cribellate thread.

The catching ladder and the supporting webs are usually built far from the retreat of the spider in the tree hollows, as far as 3 m (9.8 ft) away.

[3][8] When a prey animal is detected within the range of the spider, it lunges with its clawed front legs and scoops it up into the catching ladder, also administering a bite in the process.

Due to its elasticity, the cribellate threads can stretch to comfortably envelop even large prey.

The catching ladder is destroyed during the capture and the spider may rebuild it during or even before feeding on the caught prey.

In greater threat levels, however, they immediately drop from their webs to the ground and "play dead" (thanatosis), assuming an inert posture with their legs tightly held against their bodies.

[3][8] In contrast to adults and immature individuals, all the juveniles were observed to build their catching ladders and support webs inside the tree hollows.