General: Violin Spiders (Family Sicariidae) are six-eyed spiders known for their dangerous necrotic bites. They are identified by the six eyes arranged in three sets of two eyes each (if you get close enough). More easily, on the top of the thorax, a brown violin-shaped mark gives them the family name.

Around Las Vegas, we have Desert Recluse Spiders (Loxosceles deserta), although they are commonly referred to as "brown recluse" spider. However, the Brown Recluse (Loxosceles reclusa), a different species, occurs in the Midwestern and southern USA. Look for Desert Recluse Spiders is relatively dark, relatively damp places. For example, they are commonly found inside Desert Tortoise burrows.

Like all spiders, violin spiders have fangs and venom, and in this case, they are quite harmful to humans because of their necrotic (tissue dissolving) venom.