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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).
Females are about 9.5–19 millimeters (0.37–0.75 in) long, while males are somewhat smaller. The upper surface of the abdomen is brown and hairy. The legs display alternating light and dark brown bands. The undersurface of the abdomen is black, with two white spots.
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.
The brown recluse is one of three spiders in North America with dangerous venom, the others being the black widow and the Chilean recluse. Brown recluse spiders are usually between 6 and 20 millimetres (0.24 and 0.79 in), but may grow larger. While typically light to medium brown, they range in color from whitish to dark brown or blackish gray.
The underside of the abdomen of the Rabbit Hutch Spider reveals a most interesting pattern resembling the infinity sign. [1] The female abdomen is light brown and often shiny compared to the males. [2] Steatoda bipunctata rarely exceeds 7 mm in body length and there are no known instances of envenomation. It is highly unlikely the fangs of this ...
The top is a dark greyish-brown with light band that extends from the front edge to the sides and another at the back extending similarly. It is covered in iridescent hairs, amongst which are a few very long brown bristles. The underside is dark grey marked with four rows of small light dots. The spider's spinnerets are greyish-black
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.
Typical coloration ranges from purplish brown to black, with light-colored markings. Unlike black widows, redbacks, and other Latrodectus species, S. grossa does not have a bright red hourglass pattern or any other bright, distinctive markings. Like many spiders, the male is sometimes smaller but can many times be nearly as long as the females.
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