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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).
Leg lengths range from 50–90 millimetres (2.0–3.5 in). The spider is a pale to dark brown colour with several chevron markers and lighter stripes around its legs, similar to D. scriptus. [2] The legs are banded with brown/black annulations on the femora and reddish-brown/black annulations on the tibia. [3]
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.
What they look like: Hobo spiders are tannish-brown and the top of the spider may look mottled, with darker and lighter spots, Potzler says. They look pretty hairy and have spiny hairs coming off ...
Barn spiders are predominantly yellow and brown in coloration with striped legs. Their undersides are typically black with white marks inside, although color ranges can be quite variable. They are about three-quarters of an inch (20 mm) long but can grow up to and above an inch (25 mm) long with large, round abdomens. [2]
The southern house spider (Kukulcania hibernalis) is a common brown spider that is overall brown in color with a dark brown stripe extending from its eyes down its cephalothorax and has a bulbous ...
It is a dark brown oval that is also covered in dark brown hairs. There is a light stripe down the middle of the topside and four rows of dots on the underside. The spinnerets are dark and the legs are generally dark brown, although some sections are reddish, with long brown hairs. [11] The spider has distinctive copulatory organs.
The spider is small, with a typical total length of 2.8 mm (0.11 in). The carapace has a typical length of 1.61 mm (0.063 in) and width of 1.19 mm (0.047 in). It is dark brown to brown and with a faint yellow to brown stripe across the middle.