It is possible that some bites may result when a spider mistakes a finger thrust into its web for its normal prey, but ordinarily intrusion by any large creature will cause these spiders to flee. Based on collected data, the geographic range for Steatoda grossa includes 13 countries and 12 states in the United States. UC IPM is a great resource for bug questions of all sorts. Males often die shortly after mating. The main difference between a false widow spider and a black one is the colouring – unlike its very venomous almost-twin, the false widow is brown in colour. I do agree with the above post. The bite mark starts swelling, becomes itchy, and you have no idea what attacked you, and more importantly – how to act. Millipede vs Centipede – What’s the Difference?  It is originally from the Canary Islands and Madeira. Im with you on the false widow precept on account of the fact that i had a pet black widow for three years and did a LOT of research while having her and before i got her. 34 pp. 70. As the common name indicates, the spider superficially resembles and is frequently confused for the black widow and other spiders in the genus Latrodectus, which can have medically significant venom. But really, there’s no guarantees here that other less flashy spiders aren’t some kind of dangerous, either. That’s what I always do . there were probably hundreds under the lunch tables of one of my elementary schools, didnt even know they were there for a long time. we all die of the same thing that everyone in western countries die of, obesity and smoking. Or maybe they’re okay–see the UC Riverside link downthread. In terms of shape, false widow spiders have round, bulbous bodies, the male’s one being a tiny bit slimmer than the female’s. In our experience, black widows like very dry environments, so unless your worm bin is very dry, I wouldn’t expect to find them there. Imagine that one day, while cleaning around your house, you see a spider crawling up your leg. in this country we call people who get bitten by snakes or spiders “idiots”, because they all broke the second rule. Even black widows, while having a painful bite (not sting) are usually not likely to bite unless cornered, and even then unless the person is someone with low immune system (young, old or sick) on or sensitive to venom, they will probably be just fine. Howell, W. M., and R. L. Jenkins. False widows have very poor eyesight and aren’t very aggressive. Sometimes in the garden tool shed HIGH OFF THE GROUND; absolutely red hourglass on her belly and all. Never and I mean never leave clothes on the floor put in a plastic hamper. form a group of species that, because of their general resemblance to the much more notorious black widow spiders (Latrodectus spp. Тhat said, a female black widow is far more dangerous when it comes to biting than a male one. It is a common spider in homes and other structures in the southern and western states. If you get bitten by a black widow spider, visit your doctor as soon as possible. Also……black widows and brown widows love mailboxes, windows, and edges of garbage cans which are high off the ground……so don’t take the advice that if its up high its not a black widow….. , Like almost all spiders, Steatoda nobilis is venomous, but its bite is almost exclusively of mild effect on humans, without the severe consequences that can occur with black widow spiders.  The legs are reddish-orange. Don't subscribe They are kind of like the Ur-Spider. The spider is an introduced species across Europe, plus parts of North Africa, and likely spreading. Entering your postal code will help us provide news or event updates for your area. However, this doesn’t mean that you won’t see a false widow near your home or inside of it – this type of spider also enjoys napping in walls or on fences. It is from the same genus as the Steatoda triangulosa and the Steatoda bipunctada.eval(ez_write_tag([[300,250],'usaspiders_com-box-3','ezslot_6',103,'0','0'])); Steatoda grossa is an imported species that originated in Europe. brown widows are more of a light tan colour with crazy but symmetrical markings usually of a dark brown or black colour with an orange red marking on the bottom. Good luck! ^ The full English name for Steatoda nobilis is "noble false widow". Black widow spiders are far bigger and black in colour (duh), while its doppelganger is brown and a lot smaller. Neither I nor my wife have any fear of spiders because we know that they are not going to bite. This spider is similar to S. grossa in shape, but slightly smaller, and is generally found in colder climates. Go here to see the true nature of these beautiful and gentle creatures: https://www.youtube.com/watch?v=r4OftWZn5BU, Let me say this you can never be too careful especially with children. We had a HUGE female make her web in the garage window and you should have seen the amount of moth carcasses that piled up on that ledge. Similar to the true black widow, the false black widow female is 6 to 10.5 millimeters in length, but it lacks the red hourglass pattern on the underside of the abdomen, which is more oval in shape than that of the true black widow. Was this true? They are very shy, bumbling creatures, they do not go out wandering on the hunt, they stay in their webs in the most out of the way spot they can find. The two sexes are colored similarly; however, the sexually mature male almost always has lighter, more reddish-coloured legs than the female. False widows (Steatoda sp.) As one of this spider's common names indicates, the spider superficially resembles, and is frequently confused for, the black widow and other venomous spiders in the genus Latrodectus. Is a big one, Black Widows are not as “dangerous” as you are all saying, I have trapped them up here in BC too, they like the fruit trees and yes, I’ve seen them up off the ground. Changes are low that they are dangerous. Here’s an article from UC Riverside on the brown widow, for informations’ sake: “The bite of the brown widow is about the same as any non-poisonous spider. If I see those, I put on my gloves and tear them out. It’s hard to advise you without seeing the situation. 42 pp. Female S. grossa spiders can live up to six years; the typical lifespan for the male is 1-1.5 years. . I “cornered” one a few weeks ago that was carrying an egg case. Know where they hang out. We had one this year on the outside of my sons bedroom window screen far from the ground, she had three giant yellowish egg sacks hanging out with her on the screen. All pictures I’ve seen of male black widow spiders look totally different from the females, so I’m fairly sure the spider you have is not a male black widow. are sometimes confused for black widow spiders (Latrodectus sp.) The name false widow is given to species in the genus Steatoda. Although the males can live for up to 18 months, they die shortly after mating. and are mistakenly thought to be as dangerous. False Black Widow – we’ve got TONS of them at our place too.