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The eye arrangement of spiders in the genus Latrodectus. Female widow spiders are typically dark brown or a shiny black in colour when they are full grown, usually exhibiting a red or orange hourglass on the ventral surface (underside) of the abdomen; some may have a pair of red spots or have no marking at all.
Latrodectus hesperus, the western black widow spider or western widow, is a venomous spider species found in western regions of North America. The female's body is 14–16 mm (1/2 in) in length and is black, often with an hourglass-shaped red mark on the lower abdomen. This "hourglass" mark can be red, yellow, and on rare occasions, white.
L. geometricus (brown button spider) L. rhodesienses (Zimbabwe button spider) L. umbukwane (Phinda button spider) L. geometricus is found in many parts of the world,(including in the United States) and it is known as the brown widow spider. it is unknown where this species' origins are. L. rhodesienses is native to Africa. Both brown button ...
Latrodectus mactans, known as southern black widow or simply black widow, and the shoe-button spider, [citation needed] is a venomous species of spider in the genus Latrodectus. The females are well known for their distinctive black and red coloring and for the fact that they will occasionally eat their mates after reproduction.
Latrodectus geometricus, commonly known as the brown widow, [2] [3] brown button spider, grey widow, brown black widow, [3] house button spider or geometric button spider, is one of the widow spiders in the genus Latrodectus. As such, it is a 'cousin' to the more infamous Latrodectus mactans (black widow).
Latrodectus umbukwane, commonly known as the Phinda button spider, is a species of the spider in the genus Latrodectus described in 2019, named after the Phinda Private Game Reserve where research specimens were collected. [2]
As of July 2022, the World Spider Catalog lists only India, Nepal, Myanmar, China and Japan. [1] This species has been recorded in India and Nepal only since 2012, and Indochina in 2015, [ 8 ] which is thought to reflect historical under-surveying of arachnids in this region.
This species of capuchin monkey presents slight sexual dimorphism; the male being larger in body size. [8] The female weighs between 1.4–3.4 kg (3.1–7.5 lb), whereas the male can weigh between 1.3–4.8 kg (2.9–10.6 lb). [9] The average male individual averages a height of 0.8m from nose to tail, while the female is slightly shorter.