Saturday, January 23, 2016
Violin spider(brown recluse spider), is a well-known member of the family Sicariidae.t is often found in warm, dry climates and prefers to stay in undisturbed areas such as basements, closets, and attics. It is not an aggressive spider, but will attack if trapped or held against the skin. One death — in December, 2001 — has been reported in the United States from a brown recluse bite.A black widow spider is a small, shiny, black, button-shaped spider with a red hourglass mark on its abdomen, and prefers warm climates. Black widow spider bites release a toxin that can cause damage to the nervous system, thus emergency medical treatment is necessary.Recluse spiders build irregular webs that frequently include a shelter consisting of disorderly threads. The wild variety lives in the southern states ranging from central Texas to westernGeorgia, and the domestic variety lives in the lower reaches of the Midwest. They frequently build their webs in woodpiles and sheds, closets, garages, plenum, cellars and other places that are dry and generally undisturbed. When dwelling in human residences they seem to favor cardboard, possibly because it mimics the rotting tree bark which they inhabit naturally. They have also been encountered in shoes, inside dressers, in bed sheets of infrequently used beds, in clothes stacked or piled or left lying on the floor, inside work gloves, behind baseboards and pictures, and near sources of warmth when ambient temperatures are lower than usual.