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Topic: Black widow spider

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In the News (Wed 22 May 19)

  Black widow spider - Wikipedia, the free encyclopedia
It is a large widow spider found throughout the world and commonly associated with urban habitats or agricultural areas.
Adult female fl widow spiders are shiny fl with an hourglass shaped marking on the bottom of its abdomen which, although most commonly red, may range in color from white to yellow to various shades of orange and red.
As is characteristic of all arthropods, fl widow spiders have a hard exoskeleton composed of chitin and protein (5).
en.wikipedia.org /wiki/Black_widow_spider   (1560 words)

 Black Widow Spider: Control, Description, Biology of Black Widow Spiders
Black widow spiders are common around wood piles, and are frequently encountered when homeowners carry firewood into the house.
The bite of the female fl widow spider may not always be felt at first and besides slight local swelling, there is usually little evidence of a lesion.
Black widow bites are sharp and painful, and the victim should go to the doctor immediately for treatment.
www.pestproducts.com /blackwid.htm   (766 words)

 black widow spider
Black widows are common around man-made structures such as garages, lawn furniture, and woodpiles.
Black widows are shy, sedentary, and largely nocturnal.
The fl widow is one of two species within our region that is potentially dangerous to humans (the brown spider is the other).
www.desertmuseum.org /books/nhsd_blackwidow_spider.html   (305 words)

 Black Widow Spider - MSN Encarta
Black Widow Spider, common name for any of several related long-legged, smooth-bodied spiders, chiefly inhabiting the Tropics, but also common in the southern United States and found as far north as Canada.
At least three other species found in the United States are also poisonous to humans: the brown, or gray, widow spider; the red widow spider, with irregular red and yellow markings; and the northern widow spider, with a row of red spots above and two red bars on the underside of the abdomen.
The brown, or gray, widow spider is classified as Latrodectus geometricus, the red widow spider as Latrodectus bishopi, and the northern widow spider as Latrodectus variolus.
encarta.msn.com /encnet/refpages/RefArticle.aspx?refid=761579227   (299 words)

 Black Widow Spiders by Jim Cornish, Gander, Newfoundland Canada
The female Black Widow is shiny fl, usually with a reddish hourglass shape on the underside of her spherical abdomen.
The widow spiders, genus Latrodectus, are among the most recognized spiders on earth; they are the largest of the cobweb weavers, family Theridiidae, and all species are poisonous.
The adult female is glossy fl with a bright orange to red hourglass shaped marking on the underside of her abdomen.
www.cdli.ca /CITE/spidersblack.htm   (584 words)

 Black Widow Spider (Latrodectus mactans) - Chesapeake Bay Program
The fl widow's reputation as one of the most venomous terrestrial creatures, while accurate on the whole, tends to exaggerate the dangers presented by potential contact.
Black widows generally are not aggressive unless confined or bothered, and the amount of venom a female injects is minute (the males are harmless).
The fl widow's bite may be felt only as a pin prick, during which the spider's fangs inject a minute amount of highly toxic venom under the skin.
www.chesapeakebay.net /info/black_widow.cfm   (706 words)

 Black Widow Spider   (Site not responding. Last check: 2007-10-21)
Females usually fl (occasionally brownish fl; red widow of Florida with cephalothorax and legs usually bright orange, sometimes yellow or brick red); males usually with color pattern on dorsal or upper surface, pattern variable but typically consists of a median row of red spots with white lines or bars radiating out to sides.
The fl widow bite is not always felt, so the only reliable evidence of a bite is a slight local swelling with 2 tiny red spots where the fangs entered.
Outside, fl widows commonly live in protected spaces among and under stones and pieces of wood, in firewood piles, under decks, in hollow stumps and trees, in rodent burrows, and les often in low tree branches or shrubbery.
www.extbyross.com /Pests/BlackWidowSpider_files/bwspider.htm   (953 words)

 Black Widow Spiders and Other Spiders of Medical Importance
The brown recluse spider is somewhat smaller (the body of the spider and its legs cover the size of a quarter) than the fl widow and has a characteristic fiddle or violin marking on its back (dorsal side near the top of the spider).
The brown widow spiders are easily differentiated from the brown recluse because the brown widowed spiders have a similar appearance to that of the fl widows and, of course, lack the fiddle marking.
The hobo is one of the funnel-weaving spiders.
members.tripod.com /~LouCaru/index-13.html   (4459 words)

 Black Widow Spider   (Site not responding. Last check: 2007-10-21)
The remaining fl widow species were historically considered to be only one species but are now recognized as three distinct species.
However, the venom of fl widows is a neurotoxin and it may interfere with the nerve impulses to muscle tissue.
Black widows belong to the Family Theridiidae, a group of spiders known as the comb-footed spiders because of the specialized comb structure on tarsus IV.
kaston.transy.edu /widow.html   (674 words)

 Black Widow Spiders - DesertUSA
Black Widow spiders inhabit most of the warmer regions of the world to latitude of about 45 degrees N. and S. They occur throughout all four deserts of the American Southwest.
Black Widows comprise about six species and inhabit most of the warmer regions of the world to a latitude of about 45 degrees N. The female fl widow spider, though it is the most venomous spider in North America, seldom causes death as it injects a very small amount of poison when it bites.
Black Widow spiders are not usually deadly, especially to adults, because they inject only a small amount of venom.
www.desertusa.com /july97/du_bwindow.html   (1199 words)

 Black Widow Spider, HYG-2061A-04
Adult female northern fl widow spiders are shiny fl or brown-fl with a row of red spots on the top of the abdomen along the midline.
The northern fl widow spider is similar to the fl widow except its habitat is marginal land with sparse vegetation.
The severity of an individual’s reaction to the fl widow spider bite depends on the area of the body bitten, amount of venom injected, and their sensitivity to the venom.
ohioline.osu.edu /hyg-fact/2000/2061A.html   (1390 words)

 CPCS: Spider Bites
Spiders generally prefer to live in undisturbed areas such as corners of the house or the eaves or in the garden where they can catch insects in peace.
The fl widow spider is a shiny, inky fl spider with a large round tail segment (abdomen).
Spider bites by this spider are becoming recognized more often in California, which may be due to the fact that the spider is becoming better known.
www.calpoison.org /public/spiders.html   (2254 words)

 Animal Planet :: Corwin's Carnival of Creatures   (Site not responding. Last check: 2007-10-21)
Usually, the fl widow spider swathes prey caught in its snare, bites it and later drags it to its hub, or retreat, to be eaten.
The fl widow spider is timid, sedentary, solitary, cannibalistic and nocturnal.
While fl widow spiders are not aggressive and do not have the instinct to bite, its venom is neurotoxic, which means that it blocks the transmission of nervous impulses.
animal.discovery.com /fansites/jeffcorwin/carnival/crawler/blackwidow.html   (1344 words)

 Black Widow Spider Bite
Spiders are often blamed for all kinds of symptoms, from local itching to diffuse rashes.
The northern fl widow has a row of red spots down the middle of the upper surface of its abdomen and 2 crosswise bars on the undersurface.
Black widow spiders are nocturnal and, thus, are active at night.
www.emedicinehealth.com /black_widow_spider_bite/article_em.htm   (350 words)

 Hey! A Black Widow Spider Bit Me!
What a Black Widow Spider Is The fl widow spider is one of a few poisonous kinds of spiders in the United States.
The fl widow spider is shiny and fl with a red-orange or yellow mark in the shape of an hourglass on its stomach.
Black widow spiders and their relatives can be found almost anywhere in the Western hemisphere of the world in damp and dark places.
www.kidshealth.org /PageManager.jsp?dn=mhms&lic=120&cat_id=20442&article_set=10273&ps=304   (559 words)

 Black Widow Spider (Latrodectus mactans)
Black Widow- Home Spun Death Traps (1040 words) A spider is an amazing creature, but even more amazing is the silk it spins.
Black Widow- When the Black Widow Bites (874 words) Learn about the fl widow's venom, how to avoid a bite, identify a suspected bite, and treat a known bite.
Adult fl widow spiders are shiny fl with two reddish or yellowish triangles on the abdomen that forms an hourglass shape.
www.thebigzoo.com /Animals/Black_Widow_Spider.asp   (504 words)

 Ladywildlife's Aarvark Page
The fl widow spider is not as dangerous as its reputation implies.
Black widow spiders are found throughout the warm parts of the world.
The fl widow stabs its prey with its fangs to inject the venom, though its mouth is really adapted for sucking.
ladywildlife.com /animal/blackwidowspider.html   (934 words)

 Black Widow Spiders and Black Widow Spider Pictures
The female fl widow spider is the most easily recognized, her shiny fl body giving great contrast to the red hourglass marking on her round abdomen.
Adult fl widow spider males are harmless, about half the female's size, and usually have yellow and red bands with spots on their backs.
The fl widow spider’s range is from Massachusetts to Florida and west to California, Texas, Oklahoma and Kansas.
www.doyourownpestcontrol.com /black_widow_spider.htm   (1070 words)

 Black Widow Spider
Black widow is actually the common name given to several long-legged, smooth bodied spiders found in the tropics, southern United States and southern Canada.
Black widows are the only spiders in the United States with a neurotoxic poison, which means it affects nerves or nervous tissue.
Black widow bites are rarely life threatening but can be dangerous for small children or people with chronic health problems.
www.wildlifedepartment.com /blackspider.htm   (633 words)

 Black Widow Spider - Black Widow Bites Treatment
The female fl widow is shiny fl with a red hourglass on abdomen; however this does not always have to be the case.
The fl widow is common in fields, woodpiles, and unoccupied dwellings.
Black widow venom is primarily a neurotoxin, which as a rule does not cause local tissue death and destruction.
www.surviveoutdoors.com /reference/spiders/black_widow.asp   (396 words)

 Black widow spider
The females, on the other hand, are one of the most venomous spiders, although their bites are not usually fatal for humans because they inject only a small amount of venom.
Females are easily recognised by their shiny fl body with a red hourglass marking on the underside of the spherical abdomen.
Black widow spider toxin contains chemicals that harm the nervous systems of their prey.
www.bristolzoo.org.uk /learning/animals/invertebrates/black-widow-spider   (503 words)

 SDNHM: Black Widow
Also called the "hourglass" or "shoe-button" spider, a name derived from the crimson markings on the underside of the abdomen.
The fl widow conceals itself in a funnel-shaped retreat connected to an irregular mesh of coarse silk close to the ground where it entangles prey: cockroaches, earwigs and crickets.
If not for their potent venom, fl widows probably would be considered beneficial because they help control a number of insect pests.
www.sdnhm.org /fieldguide/inverts/latr-hes.html   (294 words)

 Black Widow Spider
Black widows usually seek dry, sheltered sites such as buildings during periods of cold weather.
In fields of fruit or vegetable crops where these spiders are known to be a problem, gloves should be worn as a safeguard against being bitten.
Black widow spiders can also be killed with pesticidal sprays.
ipm.ncsu.edu /AG369/notes/black_widow_spider.html   (513 words)

 Black widow spider
The spiders hang in an inverted position in these webs, do not leave them voluntarily, and are clumsy and completely out of their element away from them.
Today people are most likely to suffer fl widow bites while moving lumber or other clutter from infested areas, while sitting on outdoor furniture, or when putting on clothing in which a spider is trapped.
The venom of the fl widow is and oily yellow fluid that causes a general release of neurotransmitters at synaptic junctions, and so the clinical manifestations of a fl widow bite are primarily neurological.
www.uark.edu /depts/entomolo/museum/widow.html   (980 words)

 Black widow spider, Eastern North Carolina, NC
Female fl widows are long-legged, shiny, coal-fl spiders with an orange, red, or yellow shape on their underside that usually looks like an hourglass but may be another shape.
Black widow spiders tend to bite defensively when their webs are disturbed.
A fl widow spider bite is diagnosed through a physical examination and questions about the bite.
www.uhseast.com /124623.cfm   (474 words)

 Antivenin, Black Widow Spider Drug Information
Black widow spider antivenin belongs to a group of medicines known as immunizing agents.
Black widow spider antivenin is to be used only by or under the supervision of a doctor.
Although there is no specific information comparing use of fl widow spider antivenin in the elderly with use in other age groups, this medicine is not expected to cause different side effects or problems in older people than it does in younger adults.
www.drugs.com /cons/Antivenin__Black_Widow_Spider.html   (932 words)

 Black Widow Spider- EnchantedLearning.com
Black Widow Spiders are extremely poisonous arachnids (not insects).
These venomous spiders are found in warm and temperate climates all around the world.
Black Widows have a two-part body, strong jaws, poisonous fangs, and a hard exoskeleton.
www.enchantedlearning.com /subjects/arachnids/spider/Blackwidowprintout.shtml   (279 words)

 Southern Black Widow Spider Care Sheet
The Southern Black Widow Spider is one of the species with the infamous "red hourglass" marking on the underside of it's abdomen.
When keeping any species of widow spider in captivity, make sure that the tank it is in is escape-proof, and can not be shaken or dropped easily because widow spiders are very fragile, and their large abdomens can burst easily, which will cause death.
The Southern Black Widow Spider makes for an interesting captive arachnid, although should be respected for it's powerful venom and only be kept by mature, responsible, experienced people who are aware of this.
www.petbugs.com /caresheets/L-mactans.html   (407 words)

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