On new or poorly known Australian Filistatidae spiders (Araneae: Araneomorphae), including a study on the fine morphology of <i>Wandella</i>

I present an update on the taxonomy of the filistatid genera <i>Wandella</i> Gray and <i>Yardiella</i> Gray, both endemic to Australia. Two new species are described: <i>Wandella grayi</i> sp. nov., known from Queensland, and <i>Wandella infernalis</i> sp. nov., known from a single cave in Western Australia. The male of <i>Wandella australiensis</i> (L. Koch) and the females of <i>Wandella stuartensis</i> Gray and <i>Wandella waldockae</i> Gray are described and illustrated for the first time. New records are given for these and other species of Australian filistatids, including the first epigeal records of <i>Yardiella humphreysi</i> Gray, a species so far known only from caves. Updated distribution maps are presented. Additionally, I present novel morphological data for <i>Wandella</i> using light and scanning electron microscopy. The cephalothorax, spinning organs, genitalia and appendages of some species are illustrated in detail. I report the presence of a putative claw extensor muscle in the male palpal cymbium, and describe interesting modifications in the clypeal region of adult males. The phylogenetic significance of these characters is briefly discussed.