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Types of Black Widows

Brown Widow​
Brown Widow​

Brown Widow vs Black Widow. The first thing I want to do is to point out that Brown Widows have venom that’s actually kind of potent, although they don’t produce a whole lot of it. When I say they’re generally not harmful, that’s not a free pass to be careless around them.

Katipo​
Katipo​

The katipo (Latrodectus katipo) is an endangered species of spider native to New Zealand. It is one of many species in the genus Latrodectus, such as the Australian redback (L. hasseltii), and the North American black widows. The species is venomous to humans, capable of delivering a comparatively dangerous bite.

image: flickr.com
Latrodectus ​Corallinus​
Latrodectus ​Corallinus​

Latrodectus is a genus of spiders in the family Theridiidae, most of which are commonly known as widow spiders. The genus contains 31 recognized species distributed worldwide, including the North American black widows (L. mactans, L. hesperus, and L. variolus), the button spiders of Africa, and the Australian redback spider.

Latrodectus ​Jubatus​
Latrodectus ​Jubatus​

Species: 31 species of "widow spiders," including: Latrodectus hersperus (western black widow), Latrodectus mactans (southern black widow) and Latrodectus variolus (northern black widow) Black widow mating. According to Canadian Geographic, black widows are primarily solitary, with the exception of late spring when mating occurs. Female spiders can live up to three years. Males typically live for one or two months.

image: biolib.cz
Latrodectus ​Lilianae​
Latrodectus ​Lilianae​

Adult male black widows are half the size of the females, ... Latrodectus lilianae, Iberian Peninsula; Latrodectus pallidus, the white widow or white steppe spider, ...

Latrodectus ​Pallidus​
Latrodectus ​Pallidus​

Latrodectus pallidus is a species of spider commonly found throughout North Africa, the Middle East, and central Asia. A common name in English is the white widow spider, and it is known in Russian as белый каракурт, or white steppe spider.

image: flickr.com
Latrodectus ​Tredecimguttatus​
Latrodectus ​Tredecimguttatus​

Latrodectus is a genus of spiders in the family Theridiidae, most of which are commonly known as widow spiders. The genus contains 31 recognized species distributed worldwide, including the North American black widows (L. mactans, L. hesperus, and L. variolus), the button spiders of Africa, and the Australian redback spider.

image: uniprot.org
Redback ​Spider​
Redback ​Spider​

"The Redback spider (Latrodectus hasselti) is a potentially dangerous spider native to Australia that resembles a Black widow spider. It is a member of the genus Latrodectus or the widow family of spiders, which are found throughout the world. The female is easily recognisable by its black body with prominent red stripe on its abdomen.

source: funtrivia.com
Southern ​Black Widow​
Southern ​Black Widow​

Male Southern black widows lack the characteristic hourglass of the female, but may have red spotting on the top or underside of the abdominal segment. Figure 6. Egg sac of a Southern black widow, Latrodectus mactans (Fabricius). Photograph by Lyle J. Buss. Figure 7. Egg sac of a Southern black widow, Latrodectus mactans (Fabricius).

Western Black ​Widow​
Western Black ​Widow​

Male western black widow: This image shows the enlarged palpal organs (large dark disks) at the tip of the pedipalps and the spider's eight eyes when the image is expanded.

image: bugguide.net