In North America, the species is commonly found in Middle Atlantic states (New Jersey, Delaware, Connecticut, Maryland). During the April–May mating season, it can travel north along the coast as far as Massachusetts in summer, and rarely, in southern Ontario and southern Quebec,[2] Michigan,[3] and at least as far northwest as parts of Wisconsin.[4]
A bite may cause latrodectism, and requires medical attention in the case of increasingly severe discomfort or spreading local redness accompanied by severe pain.[5] Other symptoms, which can last up to a week, may include body aches, severe pain, fever, inflammation, nausea, and vomiting.[6] Bites to humans are not typically deadly except in infants and the elderly.[citation needed] The LD-50 has been measured in mice as 1.20–2.70 mg (0.019–0.042 gr); each spider contains about 0.254 mg (0.0039 gr) of venom.[7]
Unlike for the related Latrodectus mactans, as of 2015[update] no antivenom was available.[citation needed]
Referencesedit
^"Taxon details Latrodectus variolus Walckenaer, 1837", World Spider Catalog, Natural History Museum Bern, retrieved 2016-04-26
^Wang, Yifu; Casajus, Nicolas; Buddle, Christopher; Berteaux, Dominique; Larrivée, Maxim (2018). "Predicting the distribution of poorly-documented species, Northern black widow (Latrodectus variolus) and Black purse-web spider (Sphodros niger), using museum specimens and citizen science data". PLOS ONE. 13 (8): e0201094. Bibcode:2018PLoSO..1301094W. doi:10.1371/journal.pone.0201094. PMC6082516. PMID 30089136.
^"Northern Black Widow Spider (Latrodectus variolus)". Plant & Pest Diagnostics. Retrieved 2023-05-09.
^pliesch (2018-05-22). "Black Widow Spiders: The Hermits of Door County, Wisconsin". Insect Diagnostic Lab. Retrieved 2023-05-09.
^(PDF). 2015-07-15. Archived from the original (PDF) on 2015-07-15. Retrieved 2023-05-09.
^Rochlin, Ilia; Hockett, William; Francis, Arie (2021). "A case of pediatric northern black widow spider (Latrodectus variolus) bite in New York, USA". Toxicon. 194: 86–89. doi:10.1016/j.toxicon.2021.02.001. PMID 33610637. S2CID 231989262. Retrieved 26 April 2023.
^McCrone, J.D. (December 1, 1964). "Comparative lethality of several Latrodectus venoms". Toxicon. 2 (3): 201–203. doi:10.1016/0041-0101(64)90023-6. PMID 14298228.
External linksedit
Data related to Latrodectus variolus at Wikispecies
Wikimedia Commons has media related to Latrodectus variolus.
This Theridiidae-related article is a stub. You can help Wikipedia by expanding it.
latrodectus, variolus, northern, black, widow, spider, northern, widow, venomous, species, spider, genus, latrodectus, family, theridiidae, population, closely, related, southern, black, widow, latrodectus, mactans, western, black, widow, latrodectus, hesperus. Latrodectus variolus the northern black widow spider or northern widow is a venomous species of spider in the genus Latrodectus of the family Theridiidae The population is closely related to the southern black widow Latrodectus mactans and the western black widow Latrodectus hesperus of the genus citation needed Latrodectus variolus Female Male with damaged legs Scientific classification Domain Eukaryota Kingdom Animalia Phylum Arthropoda Subphylum Chelicerata Class Arachnida Order Araneae Infraorder Araneomorphae Family Theridiidae Genus Latrodectus Species L variolus Binomial name Latrodectus variolusWalckenaer 1837 1 In North America the species is commonly found in Middle Atlantic states New Jersey Delaware Connecticut Maryland During the April May mating season it can travel north along the coast as far as Massachusetts in summer and rarely in southern Ontario and southern Quebec 2 Michigan 3 and at least as far northwest as parts of Wisconsin 4 A bite may cause latrodectism and requires medical attention in the case of increasingly severe discomfort or spreading local redness accompanied by severe pain 5 Other symptoms which can last up to a week may include body aches severe pain fever inflammation nausea and vomiting 6 Bites to humans are not typically deadly except in infants and the elderly citation needed The LD 50 has been measured in mice as 1 20 2 70 mg 0 019 0 042 gr each spider contains about 0 254 mg 0 0039 gr of venom 7 Unlike for the related Latrodectus mactans as of 2015 update no antivenom was available citation needed References edit Taxon details Latrodectus variolus Walckenaer 1837 World Spider Catalog Natural History Museum Bern retrieved 2016 04 26 Wang Yifu Casajus Nicolas Buddle Christopher Berteaux Dominique Larrivee Maxim 2018 Predicting the distribution of poorly documented species Northern black widow Latrodectus variolus and Black purse web spider Sphodros niger using museum specimens and citizen science data PLOS ONE 13 8 e0201094 Bibcode 2018PLoSO 1301094W doi 10 1371 journal pone 0201094 PMC 6082516 PMID 30089136 Northern Black Widow Spider Latrodectus variolus Plant amp Pest Diagnostics Retrieved 2023 05 09 pliesch 2018 05 22 Black Widow Spiders The Hermits of Door County Wisconsin Insect Diagnostic Lab Retrieved 2023 05 09 California Poison Control Offers Tips about Spider Bites PDF 2015 07 15 Archived from the original PDF on 2015 07 15 Retrieved 2023 05 09 Rochlin Ilia Hockett William Francis Arie 2021 A case of pediatric northern black widow spider Latrodectus variolus bite in New York USA Toxicon 194 86 89 doi 10 1016 j toxicon 2021 02 001 PMID 33610637 S2CID 231989262 Retrieved 26 April 2023 McCrone J D December 1 1964 Comparative lethality of several Latrodectus venoms Toxicon 2 3 201 203 doi 10 1016 0041 0101 64 90023 6 PMID 14298228 External links edit nbsp Data related to Latrodectus variolus at Wikispecies nbsp Wikimedia Commons has media related to Latrodectus variolus nbsp This Theridiidae related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Latrodectus variolus amp oldid 1205408845, wikipedia, wiki, book, books, library,
