This spider's bite is much feared because its venom is reported to be 15 times stronger than a rattlesnake's. In humans, bites produce muscle aches, nausea, and a paralysis of the diaphragm that can make breathing difficult; however, contrary to popular belief, most people who are bitten suffer no serious damage—let alone death. But bites can be fatal—usually to small children, the elderly, or the infirm. Fortunately, fatalities are fairly rare; the spiders are nonaggressive and bite only in self-defense, such as when someone accidentally sits on them.
The animals most at risk from the black widow's bite are insects—and male black widow spiders. Females sometimes kill and eat their counterparts after mating in a macabre behavior that gave the insect its name. Black widows are solitary year-round except during this violent mating ritual. These spiders spin large webs in which females suspend a cocoon with hundreds of eggs.
Spiderlings disperse soon after they leave their eggs, but the web remains. Black widow spiders also use their webs to ensnare their prey, which consists of flies, mosquitoes, grasshoppers, beetles, and caterpillars. Black widows are comb-footed spiders, which means they have bristles on their hind legs that they use to cover their prey with silk once it has been trapped.
To feed, black widows puncture their insect prey with their fangs and administer digestive enzymes to the corpses. By using these enzymes, and their gnashing fangs, the spiders liquefy their prey's bodies and suck up the resulting fluid. If you are experiencing a problem with venomous black widow spiders, the most effective solution is to contact your local pest control expert. When you partner with the professionals at Pro Active Pest Control, you can rest assured that your spider problem will be taken care of.
We will partner with you, perform a thorough inspection, and create a pest control program to help exclude black widow spiders as well as the insects they feed on! We use the most modern pest control techniques and products available to control black widow spiders and a variety of other invasive pests in Northern California. Preventing problems with black widow spiders can be quite difficult. However, there are some steps homeowners can take to deter them and prevent them from finding their way inside.
Caulking any spaces found around exterior windows and doors and making sure that door sweeps are installed under all exterior doors, especially on basement doors can help prevent these pests from getting inside.
Inside your home, make sure to keep storage areas like basements, attics, and closets clutter-free. The more organized a space is, the fewer spaces that venomous black widow spiders have to hide.
To prevent being bitten by a black widow spider it is a good idea to wear gloves when working in garden areas, basements, and in outbuildings. Like most spiders, black widows weave webs. They most often reside in areas of clutter, but they also like to weave webs on firewood as well as in moisture-trapping areas like the garage or attic. All spiders carry venom that they use to paralyze and kill their prey. Most spider venom is completely harmless to humans, but black widow venom is one of the few exceptions.
If you get bitten by a black widow, the venom may cause severe nausea, paralysis, and seizures as the venom travels through your nervous system. If untreated, black widow bites can cause permanent damage to your nervous system, and in some cases, death.
Thankfully, black widow bites are very uncommon, and most people who get bitten by one make it to the hospital in time. These include under stones and decks, as well as in firewood piles and hollow tree stumps. The preferred habitats of black widows are dry man-made structures including barns, outhouses, henhouses, sheds, meter boxes, brick veneer, barrels and woodpiles.
Indoors, black widow spiders tend to hide in sheltered, dimly lit locations and are often found in garages, basements and in crawl spaces. They prefer cluttered areas that offer more harborage for their prey. As colder temperatures arrive, homeowners may notice more spiders than usual.
NPMA is offering advice on how to keep these creepy crawlers out of your home this fall. The National Pest Management Association shares results of a recent homeowner survey on bug, insect and rodent issues during the pandemic and unexpected concerns heading back to the workplace. Browse this slideshow for information on the habits and threats of 5 common spiders in the United States. Advanced Search International Search.
Black Widow Spiders Lactrodectus mactans. What are Black Widow Spiders? Black Widow Spider Identification. Color Black, with characteristic red "hourglass" on underside of abdomen. Legs 8. Shape Round. Antennae No. Region Found throughout U. Signs of an Infestation One of the most obvious signs of a spider infestation is the presence of webs in the home or on the property.
0コメント