Fact Sheet

Idiopidae: Arbanitinae


Click/tap on images to enlarge
Total length

Medium to extremely large (4–30mm or more) (Figs 1-7).

Distribution

Northern Territory, Western Australia, Queensland, New South Wales, Victoria, South Australia, Tasmania, Australian Capital Territory, New Zealand, New Guinea (Fig. 8).

Habitat

Tropical rainforest, temperate rainforest, open eucalyptus forest, semi-arid areas.

Spinnerets

(see Fig. 10) Two or four. PLS segments unequal in length; apical segment domed or triangular. PMS present or absent.

Cephalothorax

Caput of females gently raised, higher than thoracic portion; fovea of females more or less straight, deeply procurved, U-shaped, recurved, T-shaped or M-shaped.

Eyes eight; group tiny, about 0.3 of headwidth; two or three rows; rows equal in width, front row wider, or back row wider.

Chelicerae (Figs 9-10) fangs longitudinal; retromargin with three or more teeth; middle row of teeth distinct; intercheliceral tumescence in male present or absent; rastellum absent or with weak, short or thick spines.

Maxillae (Figs 9-10) longer than wide; anterior lobe small, indistinct; serrula absent; cuspules in female few, clustered at anterior inner corner or for entire length.

Labium (Figs 9-10) wider than long, or about as wide as long; cuspules in female absent or up to 10; in broad group.

Sternum (Figs 9-10) shield-shaped; with three pairs of sigilla.

Legs

Preening combs on metatarsi absent; tarsi with filiform trichobothria.

Claws three; paired claws with one row of teeth centrally; third claw bare; true tufts absent.

Scopula variable.

Male Palp

(Figs 11-14) Cymbium with spines (Fig. 11). Tibial apophysis retroventral.

Genera included

Arbanitis, Blakistonia, Bungulla, Cantuaria, Cataxia, Cryptoforis, Eucyrtops, Eucanippe, Euoplos, Gaius, Idiosoma.

Copyright © 2022. All rights reserved.