The female house spider is the larger of the two sexes, measuring about 1/3-inch long. She is gray-brown in color and her abdomen is mottled with several dark stripes on the upper side.
House spiders spin their webs outdoors or in dark corners of most rooms. They feed on a wide variety of insects, especially flies. The female is fertilized several times during her lifetime and produces up to nine egg sacs. Normally she will have three or four egg sacs in the web at all times.
Each egg sac may contain 200 or more eggs. The young hatch in about eight days and stay within the sac until after the first molt. They are cannibalistic and often eat one another. The female provides some maternal protection for the newly emerged spiderlings. However, they are soon trapping small insects for food. The spiderlings take several months to mature.
Black Widow Spider
The female black widow is about 1/2-inch long, glossy black, with a nearly globe-like abdomen. The abdomen has two triangular red spots on its underside that arranged in such a way that the spots look like an hourglass. The males are much smaller than the females,they are 1/4-inch long with a longer, narrower abdomen and somewhat longer legs.
Black widow spiders are very shy and like to build their webs in dry, protected locations where their pray is likely to travel. They are commonly found in wood piles, barns, or sheds, beneath benches, in crawl spaces, under rocks, and similar protected locations. The web is an irregular affair that serves to ensnarl the victim long enough for the spider to tangle it in more silk before giving it a lethal bite.
The female often eats the male after mating, thus giving them the rather morbid name. She lays her eggs in a silken case which she protects in the nest. Several cases may be constructed during a spider’s lifetime, each on containing an average of 255 eggs. The young spiderlings remain in the case until the second molt. They live in the vicinity of the nest for two or three weeks before producing long threads of silk that helps them float away like kites. Female spiderlings go through six or eight molts before maturing, taking from 112 to 140 days.
Black widows have poison glands and will bite if handled roughly or disturbed. They usually avoid trouble if possible. There have been deaths due to black widow bites, but in most cases you may be sick.
Brown Recluse Spider
Brown recluse spiders are light brown or flesh-colored to dark brown. They measure 5/15- to 1/2-inch long and have long legs that appear bare. There are six eyes arranged in a semicircle on the top front of the first body segment. The best identifying characteristics is the violin-shaped, dark mark that begins right behind the eyes, thus these spiders are called “fiddle backs” or “violin spiders.”
The brown recluse constructs a nondescript, irregular web that is used almost exclusively as a retreat. Nests are usually built in hidden, secluded locations such as among old papers, in seldom used clothes or shoes, or in attics. Outdoors, they are frequently found under rocks and in barns and sheds. The spider usually retreats to the nest whenever disturbed while hunting.
The female produces from one to five egg sacs in her lifetime, each one containing an average of 50 eggs. The young emerge after about 30 days. Development from egg to adult takes an average of 336 days. The young go through eight molts. Females live an average of 628 days.
These spiders have a painful bite They seldom bite unless handles or disturbed in there nests. People putting on old, seldom-used clothing should be especially cautious of being bitten.
Don’t Let This Happen To Your Loved Ones!
Because Brown Recluses like to live in heated homes, bites occur year round. And in just hours, one bite from the highly venomous and dangerous Brown Recluse spider can cause alarming damage to living tissue. Symptoms and secondary problems include:
Necrosis (death of cells)
In Rare Cases, Death