Parson Spider a common name for members of the family Gnaphosidae, are a successful group of furtive hunting spiders which occur united states. parson spider is a nuisance in homes and is generally nontoxic; although some people may experience allergic reactions to the bites.

parson spider is about 1/2 inch long and may vary in color from brown to black. The front segment of the body tends to be a chestnut color, while the abdomen is grayish with a distinctive white or pink pattern along its middle. The body is covered with fine hairs, giving a velvety appearance. The parson spider is usually found outdoors under rocks or in piles of brush or firewood. This spider does not spin a web, but wanders on the ground in search of prey.

parson spider are most numerous in dry, open regions, such as the Shortgrass Steppe of eastern Colorado and western Kansas.

Parson spiders hunt at night. During the day, they are usually found outdoors under stones or loose bark in silken retreats. Indoors, they hide under objects or in cracks or crevices.

Parson Spider Life Cycle :parson spider lay eggs within a silken egg sac that is often ball-shaped and either hidden in the web or carried by the female. Spiders may produce several egg sacs, each containing several hundred eggs. One female may produce as many as 3,000 eggs in a series of several sacs over a period of time.

Eggs may hatch a few weeks later . Spiders reach adulthood in one year. For a spider to grow, it must shed its skin (molt) usually four to twelve times before maturity. Most spiders live either one to two seasons. Spiders may overwinter as eggs, spiderlings in the egg sac, immature spiders living outside the egg sac or as adults

Indoors, this spider wanders about at night and conceals itself beneath objects or in clothing during the day. Most bites from this spider occur at night or when it is trapped in clothing. While the parson spider is not considered poisonous, bite symptoms are variable in severity. Some people may experience localized allergic swelling and itching in addition to initial pain.

A few persons may experience excessive swelling, nervousness, nausea, sweating and elevated temperatures from the bites.

Parson Spider Control:Sanitation is critical in successful spider control. Indoors, the spiders, webs and egg sacs can be collected and destroyed with a strong suction vacuum cleaner. Move and dust often behind and under furniture, stored materials, wall hangings and corners of ceilings.

Eliminate other household pests (prey) such as flies, ants and pantry pests, which attract spiders. Be sure to control excess moisture and humidity, keeping basements, crawl spaces, porches, etc., as dry as possible. Outdoors, clean up woodpiles, trash, rocks, compost piles, old boards and other debris around the house foundation where spiders often live.

Be sure to seal or caulk cracks and crevices around windows and doors and install tight-fitting screens as needed where spiders can enter the house. Use a hose with high-pressure water on the outside of the house to knock down and destroy webs, egg sacs and spiders. Use yellow or sodium vapor light bulbs at outside entrances to reduce night-flying insects (prey) which attract spiders.

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