Dusty Desert Spiders

Typical Homalonychus habitat From Wikimedia Commons: Homalonychus spiders are fairly common in such habitats, found under granite slabs resting on the soil surface, and/or under dead vegetation.

Homalonychus theologus penultimate male, showing how specialized setae (hairs) trap sand and camouflage the spiderFrom Wikimedia Commons

Homalonychus theologus penultmate maleFrom Wikimedia Commons, with this description: Interesting "paired leg" stance first noted by Vetter & Cokendolpher (2000, Journal of Arachnology), with adjacent legs held together and outstretched rigidly. These authors suggested that this behavior may constitute cactus spine mimicry.