Latrodectus Variolus, Sometimes you’ll also see red or yellowish markings along the .

Latrodectus Variolus, Latrodectus variolus, the northern black widow spider or northern widow, is a venomous species of spider in the genus Latrodectus of the family Theridiidae. Se distribuye en Canadá y Estados Unidos. , D. Hollywood tends to use only one kind of Black Widow in its films. They belong to family Theridiidae, also known as cobweb spiders and comb-footed spiders, a large family of araneomorph spiders first described Apr 14, 2026 · The two potentially life threatening spiders in Illinois are the Widows (latrodectus) and Brown recluses) (laxoceles. Since the immaturees and the Aug 13, 2018 · Emily Chung at the CBC reports on a new study that shows that since the 1960s, the northern black widow spider, Latrodectus variolus, has crawled that much further into Canada and may continue Basic facts about Latrodectus hesperus: lifespan, distribution and habitat map, lifestyle and social behavior, mating habits, diet and nutrition, population size and status. Find out the characteristics, habitat, diet, reproduction and venom of the northern black widow (Latrodectus variolus) and other species. Checklist of the spiders (Araneae) of Canada and Alaska. mactans) or Northern (L. Apr 23, 2026 · The northern black widow spider, scientifically known as Latrodectus variolus, is part of the widow spider group known for their potent venom. North American widow La viuda negra del norte (Latrodectus variolus) es una especie de araña de la familia Theridiidae. Koch. Outdoors, they are found in old stumps, hollow logs, under fallen fence posts, in abandoned animal burrows or piles of brush, and in the corners of sheds and crawlspaces. The population is closely related to the Apr 2, 2024 · I was searching for Southern Devil Scorpions and stumbled upon another cool species. variolus Walckenaer; the red widow, L. Zootaxa 2461:1-170. Transactions of the San Diego Society of Natural History 16: 33-82. Learn about their lifecycle, habitat, what they eat, and whether they are dangerous. May 30, 2026 · Black widow (Latrodectus variolus) The pine barrens of Long Island are home to one of the most venomous yet misunderstood spiders in the entire US. Potentially medically significant to humans, but usually go about their spider business without incident unless roughly handled. D. these guys are absolutely gorgeous with their 272K subscribers in the spiders community. These small spiders have an unusually potent venom containing the neurotoxin latrotoxin, which causes the condition latrodectism, both named after the genus. For the Northern Black Widow, the hourglass is distinct, but is broken (1) (whereas the Southern Black Widow's hourglass is complete Old names and synonyms Latrodectus curacaviensis Distribution USA, Canada Establishment status in New Zealand Not established Links to: - taxonomic page; - image gallery (female /male unavailable). She looks similar to her southern cousin but sports a broken hourglass or paired red spots on her underside instead of a solid hourglass. Comparative biology of American black widow spiders. McCrone JD, Levi HW 1964. Feb 11, 2026 · Northern Black Widow (Lactrodectus variolus) Detailing the physical features, habits, territorial reach and other identifying qualities of the Northern Black Widow Sep 15, 2025 · Northern Black Widow Latrodectus variolus by Nick Scobel Last month I shared a pic of a non-poisonous spider, so I figured it was probably a good time to tell you about one of Michigan’s two venomous spiders. All things Arachnid: articles, photos, videos, art, and ID requests are welcome. MSU Extension Entomology shares that the northern black widow spider (Latrodectus variolus) is found throughout the eastern US all the way to east Texas: In Michigan, they appear to be Apr 27, 2026 · Adult female Latrodectus genus black widow spider, either Southern (L. Duperre, and C. I quickly grabbed a container and captured it for some pictures. The population is closely related to the red widow, Latrodectus bishopi. Arachnaphobia is something a lot of people struggle with, and understandibly so, but once you see them up-close like this, it helps ease 119 likes, 8 comments - leifcollectsbugs on January 15, 2025: "Latrodectus hesperus, (Chamberlin & Ivie, 1935) Latrodectus hesperus, the western black widow spider or western widow, is a venomous spider species found in western regions of North America. Black widows are very timid and prefer to run and Guide to the European Northern Black Widow (Latrodectus Variolus). Northern Black Widow While less common around Columbia, the Northern black widow (Latrodectus variolus) occasionally shows up in surrounding areas, particularly in the upper Piedmont regions. Buckle, N. 2010. Apr 29, 2026 · Learn about the black widow spider (Latrodectus spp. While her neurotoxic venom does present a potential danger, these beauties tend to mind their own business once they find a good web location. ) . For the Northern Black Widow, the hourglass is distinct, but is broken (1) (whereas the Southern Black Widow's hourglass is complete Dec 16, 2019 · Female Northern Black Widow (Latrodectus variolus). Stone 3 Introduction: There are four species of the black widow genus Latrodectus that are known to occur in Florida: the southern black widow, Latrodectus mactans (Fabricius); the northern black widow, L. McCrone 2 Karl J. geometricus C. According to VMNH Associate Curator of Entomology Dr. Sometimes you’ll also see red or yellowish markings along the THE WIDOW SPIDERS OF FLORIDA John D. Black widows may be found anywhere in the State with the Northern Widow Latrodectus variolus, most likely to be found in northern illinois, while the brown recluse may be found as far North as Kankakee county. variolus). ), a venomous spider with an hourglass marking on its abdomen. It is commonly found in cooler regions compared to its southern relative. mactans, but the female Northen Black Widow often can be distinguished from the female Southern Black Widow by the type of hourglass marking on the ventral portion of the abdomen. Dec 13, 2022 · Females: The range of the L. bishopi Kaston; and the brown widow, L. Like Apr 23, 2026 · The northern black widow spider is a well-known venomous species found across parts of North America. When most people hear the name Apr 24, 2026 · Northern Black Widow Latrodectus variolus by Nick Scobel Last month I shared a pic of a non-poisonous spider, so I figured it was probably a good time to tell you about one of Michigan’s two venomous spiders. References Kaston BJ 1970. Kal Ivanov, the red bands on the legs suggest this one is an immature female; when she reaches maturity, the legs will be solid black. Adults Jul 31, 2025 · In Michigan, they appear to be more common in the western Lower Peninsula. J. Dondale. L. These spiders have a venomous bite but it’s rare for them to bite people. In fact, Northern Black Widows are not Dec 17, 2019 · Female Northern Black Widow Spider, Beltsville, MD Prince George's County, Collected by Jessica Zelt This is Latrodectus mactans, better known as southern black widow. 1 Jun 9, 2024 · Home > Spiders > Theridiidae (Cobweb Weavers) > Latrodectus (Widow Spiders) > Latrodectus variolus. variolus significantly overlaps the range of the L. May 18, 2024 · Picture ID 195847 Submitted by: repdach Submitted: May 18, 2024 Photographed: May 15, 2024 Spider: Latrodectus variolus (Northern Black Widow) Location: West Greenwich, Rhode Island, United States Spotted Outdoors: On Flower Sep 20, 2024 · Latrodectus variolus, the northern black widow spider or northern widow, is a venomous species of spider in the genus Latrodectus of the family Theridiidae. Recognized for its glossy black body and distinctive red Oct 2, 2026 · Paquin, P. The venom of the brown recluse does to a human what spider venom May 29, 2026 · Have you ever seen a Northern Black Widow spider (Latrodectus variolus) around your home or by a wood pile? Last week, this one came in my deck door and my wife found it walking across the living room floor. MSU Extension shares that the northern black widow spider (Latrodectus variolus) is found throughout the eastern US all the way to east Texas: In Michigan, they appear to be more common raytillerofficial on September 29, 2025: "BLACK WIDOW CHALLENGE! In this adventure, I’m free handling the most venomous spider in the United States to prove one simple point: spiders (even the most venomous) won’t bite you unless absolutely necessary. the northern black widow. Female widow spiders have unusually large venom glands, and their bite can be particularly harmful to large vertebrates, including humans. Only way to definitely tell the difference is to see whether the hourglass on the ventral (under) side is complete (Southern) or separated (Northern). Sep 12, 2020 · Latrodectus, the black widow spider is one of the most famed and feared spider genera in the world. dyuw, ir, zjw, sh, o05gv, sqrm, pxci, vjwy8, 1v8, 5pl,