are castianeira spiders poisonous

This is indeed an ant-mimicking spider of the genus Castianeira. I noticed it just sitting on my left knee and I quickly knocked it off my knee. Hence, it is found in the following U.S. States: Alabama, Arkansas, Connecticut, Delaware, Florida, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Nebraska, New Hampshire, New Jersey, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Vermont, Virginia, Washington, West Virginia and Wisconsin. Based on collected data, the geographic range for Castianeira crocata includes 1 countries and 3 states in the United States. Can you identify? we appreciate donations through Paypal here. However, it is more commonly seen on the East Coast. In the rare cases where an actual bite might occur, the symptoms are usually limited to minor localized discomfort such as swelling or some pain comparable to a bee sting. Found in my bathroom this morning in Central Ohio. Hi Libby, this is a hacklemesh weaver (family Amaurobiidae). Though its body shape is quite different, its characteristic black body and red-marked back puts it at risk of being mistaken for a black widow spider. Unidentified spider in Winston-Salem, North Carolina United States German entomologist L. Koch first described this species in 1841. Ran across my laptop and table. Based on collected data, the geographic range for Castianeira crocata includes 1 countries and 3 states in the United States. Slightly over .5 inches. Here is more information about them: https://usaspiders.com/castianeira-longipalpa-long-palped-ant-mimic-sac-spider/. https://usaspiders.com/castaniera-descripta-red-spotted-ant-mimic-spider/, https://usaspiders.com/pisaurina-mira-nursery-web-spider/. Don't subscribeAllReplies to my comments Notify me of replies to my comment via e-mail. okay so i have found a spider like this in my shed, only it has small white lines on either side of the red fat line so does that sound like the same one? document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()); All identification and information on USAspiders.com are free - of course. We are always happy to receive more if you find some spiders in your area. ): https://usaspiders.com/?s=castianeiraTo determine the species, I would need to know the location where it was found. Its Jill Chaskey FROM Harrison Michigan no Jill Harrison. Photo: Paul Bertner (used with permission). It's easiest to separate them by the most similar pattern & color and then look at the ranges. It mimics the behavior of ants to get close enough to them for an attack. Other Characteristic Features: They are similar in appearance to true black widow spiders. Very cool website, I just scrolled down the list for Texas until I saw a spider that looked similar, and now I know all about what I saw. I looked through all kinds of websites to see if I can find this spider and I could not find not one picture of it. The last (hindmost)pair of legs is always longest, followed by the first (frontmost) pair, and the abdomen is often decorated withbands of white scale-like setae (hairs). Please help me identify this spider . Here is more information about the red-spotted ant mimicking spider a close relative of your spider: https://usaspiders.com/castaniera-descripta-red-spotted-ant-mimic-spider/If you are interested in learning more about spiders in California, check out our California spider identification and information book available as an ebook here or as a printed paperback on Amazon. Size: They have a Red spot ant mimic spiders are found in Canada and throughout the united states, especially on the east coast. They are easily identified by the red hour glass shaped marking on the bottom of their abdomens. Overview of Spider Species in the United States. But we would like to know if this one is very poisonous. One of the most gorgeous spiders I have ever seen is theCastianeira dorsata(below, and at the top of this post)that Sean found wandering around by a stream one evening while we were staying at theSouthwestern Research Station in Arizona. Once we've identified your spider, you will get an e-mail notification. There is not enough information about the lifespan of red spot ant mimic spiders. Despite its name, the long-palped ant mimic sac spider does not look much like an ant. This is a red-spotted ant mimic spider (Castianeira descripta). It does not catch its prey with a web but wanders around searching for food. Spiders - Home and Garden IPM from Cooperative Extension Not much detail prevails regarding their web, though they Sterling Publishing Co., Inc. New . They only use their silk producing abilities to wrap their eggs in protective egg sacs and to build a nest to place the egg sacs in. Related Article: Hobo Spider vs Grass Spider 6. Pingback: Spiderday (#14) | Arthropod Ecology, Pingback: Morsels For The Mind 11/09/2015 Six Incredible Things Before Breakfast, I just took a photo of a Mexican Castianeira that you might find interesting. At first glance, however, they can easily be mistaken for ants (at least by humans). Independent populations also exist in the Pacific Northwest in Oregon and Washington. Thanks so much for sharing ::::). Exact identification can be impossible without examining the spider under a microscope. However, all spiders of the ant-mimicking spider genus Castianeira behave and move similar to ants. second in terms of length is the pair in the front. Photo: Sean McCann. Here is a similar-looking specimen on bugguide: https://bugguide.net/node/view/1344064/bgimageIts most likely Castianeira longipalpa, given your location. Any idea what this is? I saw a reply and wanted to get in touch quickly. Uniform leg color (dark), small fine hairs. There are a number of similar-looking species in that genus. The rectangular yellow mark was orientated vertically on the back of its abdomen.

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