The jumping spider is the most likely spider to bite a human in the United States, according to the California Poison Control System. Jumping spider is a name given to various species of spiders that jump or leap towards their prey. In order for a...
Although humans worldwide encounter many species of spider, only a few spiders present a threat. Two poisonous spiders are present in North America. The black widow spider and the brown recluse spider are both dangerous to humans and are found in...
Black widow spiders are one of the few types of poisonous spiders in the United States. They usually reside in warm climates, including deserts and the Southeast. They are typically black in color with a red marking on their abdomen that resembles...
The brown widow spider, or Latrodectus geometricus, is one of five widow spider species found in the United States. More than 30,000 species of spiders exist, but only a few can inflict a serious bite and produce venom harmful to humans, according...
The spider, according to "Dorland's Illustrated Medical Dictionary, 31st ed.," belongs to the species named arachnid. Characterized by a two-part body, the head and thorax section with eight legs and the abdomen or rear section, arachnids of many...
The symptoms of spider bites can be diverse and vary in severity depending on the type of spider, location of bite and an individual's immune response to the venom. Spiders bites, whether they come from venomous or non-venomous spiders, can have...
The black widow spider has found her way into American culture as a symbol of danger. However, this shy, unassuming shiny black spider with the red hourglass on her belly only bites when disturbed. Her bite can be lethal, though, and warrants...
House spiders belong to a species in the Tegenaria group, according to GreenNature.com. This species group includes the hobo spider, domestic and common house spider and the giant house spider. The hobo spider is the most dangerous in this group,...
The brown recluse is a spider commonly found in the woods, under leaves or piles of rocks. The brown recluse is poisonous, which means that it is a danger to people and animals. After a human is bitten, the wound site may become infected and the...
Swelling of the feet and ankles is normal after a long day standing or sitting, such as waitressing or sitting at a desk all day. When swelling occurs for no apparent reason and the legs and feet become reddened, it can indicate a problem....
The brown recluse spider and the black widow spider are dangerous to humans because their fangs can penetrate skin and inject poisonous venom. Brown recluse spiders have an upside-down violin-shaped marking down their backs and live only in the...
The black widow spider is a small, poisonous, eight-legged arachnid found in the Western hemisphere. The primary distinguishing feature of the black widow spider is a tiny, reddish, hourglass-shaped mark on its stomach. The black widow spider may...
Itching, or pruritus, is the skin's response to some type of internal or external irritant. The skin sends signals to the brain that alert the body's senses to the need to scratch. Skin scraping or a biopsy may be needed to determine the cause of...
Brown recluse spiders are sometimes called fiddleback or violin spiders because of the markings on their head and thorax. The spider has six eyes, arranged in pairs. The brown recluse spider is a native to the United States and found primarily in...
Spiders are a common insect worldwide, with many species existing. The danger of spiders it that they can bite, causing a range of symptoms. Sometimes symptoms are mild, such as skin irritation; however, symptoms of bites from some varieties of...
Of the tens of thousands of spider species around, most pose no serious danger to your children, as their venom is too weak or their jaws are not strong enough to pierce the skin. The black widow, which National Geographic identifies as the most...
A black widow is one of several poisonous spiders that can be found in the United States. It can be characterized by a shiny black body and a red hourglass figure on its belly. A bite from one of these spiders can cause serious symptoms, and in...