3/10/2024 0 Comments Ground spider spiders colorado![]() ![]() Their venom can cause significant cutaneous injury with tissue loss and necrosis. Examples of times people may be bitten are if the spider is hiding in a shoe when the person puts it on or the person grabs a piece of wood in a wood pile where one is hidden. The brown recluse spider can be deadly and aggressive if it feels threatened or is suddenly encountered. Pets can also be bitten by black widows and would need medical attention. Immediate first aid and medical attention should be sought if you suspect you have been bitten. The male black widow rarely bites, so it is the female black widow who is of particular danger. Effects of a black widow bite may be headache, nausea, vomiting, chest and/or abdominal pain, pyrexia, hypertension, sweating, excess salivation, muscle cramps, dizziness, watery eyes, difficulty breathing, trembling, and limb paralysis. Only a small amount of venom can cause serious illness as the poison attacks the nervous system. Black widow spiders are highly venomous and can be deadly, especially for the elderly and children. The web of black widows is not symmetrical but is messy with silk strings going every which way. Indoors, they can be found in sheds, garages, and in undisturbed, cluttered areas in basements and crawl spaces. Outdoors, black widows prefer to live in woodpiles, rubble piles, under stones, and in hollow stumps. ![]() The male black widow is light brown with lighter stripes on the underside and is smaller in size than the female. The marking may range in color from yellowish orange to red and its shape may range from hourglass to a dot. The female is normally shiny black with a red hourglass marking on the underside of the abdomen. Black widows have bodies about ½ inch long. The western black widow spider is the species found in Colorado. They migrate in waves in the fall looking for mates.
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