woodjin said:
I think most spiders in our area are fairly benign except for the brown recluse and black widow.
Jeff
Jeff,
Your mention of Brown recluse spiders reminded me of a meeting of Iowa wildlife conservation officers I attended in the mid 70's. The over-coffee conversations that day were all about one of their colleagues who had gone out deer hunting on a cool morning a month before (the tale was being told in November). He decided to still hunt. He sat down on a soft stump and resolved to be the soul of immobility until he had to raise his gun to draw bead on a buck. Tough, stoic fellow that he was, he ignored - supposedly without budging - a bunch of "ant bites" on his butt. A few hours later some other hunters passed by and he figured he'd head back in the direction of his car with them, as he wasn't feeling all that well with some nausea and headache. He got home, but after a miserable night of nausea, headache, and intolerable itching, he went to the emergency room of the local hospital where he was informed that he's sustained more than 15 brown recluse spider bites. He was hospitalized for a week or so and ulitmately released - but not before he had sloughed major masses of skin, subcutis, and muscle from his buttocks, the back of one thigh, and part of his perineum and posterior part of his scrotum.
A fellow I knew in grad school showed me a big, ugly, contracted scar that memorialized a brown recluse bite on the inside of his upper arm, from about mid-bicep to just above the elbow. He was bitten on a camping trip as he was getting out of his sleeping bag one morning. He recounted that he had finally had to be handcuffed and sedated to physically prevent him from scratching and further damaging the site of the bite.
From what I understand, the spider venom itself doesn't cause the tissue damage, but it severely reduces the tissue's resistance to contamination by and infection with a variety of bacteria that are introduced by vigorous scratching.
Brown recluse spiders. Real nasty bastards.
Dave