Latrodectus variolus
| Latrodectus variolus | |
|---|---|
| File:Latrodectus variolus (Northern Black Widow), F Theridiidae.jpg | |
Scientific classification  |
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| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Subphylum: | Chelicerata |
| Class: | Arachnida |
| Order: | Araneae |
| Infraorder: | Araneomorphae |
| Family: | Theridiidae |
| Genus: | Latrodectus |
| Species: |
L. variolus
|
| Binomial name | |
| Latrodectus variolus Walckenaer, 1837[1]
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Latrodectus variolus, the northern black widow spider or northern widow, is a medically important spider species of the genus Latrodectus in 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]
It is commonly found in Middle Atlantic states (New Jersey, Delaware, Maryland). During the April–May mating season, it can travel north along the coast as far as Massachusetts. It also occurs in Connecticut in late summer. It is found, rarely, in southern Ontario, Canada.[citation needed]
A bite may cause latrodectism, and requires medical attention in the case of increasingly severe discomfort or spreading local redness accompanied by severe pain.[2] The LD-50 has been measured in mice as Lua error in Module:Convert at line 1851: attempt to index local 'en_value' (a nil value).; each spider contains about Lua error in Module:Convert at line 1851: attempt to index local 'en_value' (a nil value). of venom.[3]
Unlike for the related Latrodectus mactans, as of 2015[update] no antivenin was available.[citation needed]
References
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ CalPoison.org
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
External links
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Wikimedia Commons has media related to Latrodectus variolus. |
Data related to Latrodectus variolus at Wikispecies
- Pages with broken file links
- Taxoboxes with no color
- Articles with unsourced statements from February 2016
- Articles containing potentially dated statements from 2015
- Commons category link is defined as the pagename
- Theridiidae
- Venomous spiders
- Spiders of North America
- Fauna of Canada
- Fauna of the United States
- Animals described in 1837
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