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Red Widow
Latrodectus bishopi
Latrodectus bishopi is the scientific name for the red widow spider, which is endemic to the Florida scrub habitat of central and southern Florida, where it lives primarily in sand dunes dominated by sand pine, Pinus clausa – a type of vegetation found only in Florida and coastal Alabama.
From the article Latrodectus bishopi on Wikipedia (CC BY-SA), quoted section by section
Description
The red widow, L. bishopi, has a red-orange cephalothorax, its abdomen is black with yellow rings outlining the rows of red spots and its legs are vermillion red. On its underside, it does not have the familiar hourglass marking and instead usually has one or two small red marks. Females are almost double the size of the male.
Range & habitat
L. bishopi is endemic to central and southern Florida. It is restricted to sand-pine scrub – inland areas of dry sand dunes dominated by sand pine, Pinus clausa. Within these areas, the species makes most of its webs in palmetto bushes (Serenoa repens and Sabal etonia) at heights of 30 cm or more above the ground. The webs are tangled, with a funnel shaped retreat for the spider below. The spider also stores its egg sacs in this retreat. The species is a known predator of Hemisphaerota cyanea. Possible predators of L. bishopi include sphecid wasps and the Florida scrub jay.
Wikipedia: “Distribution and Ecology”
Toxicity
L. bishopi has been reported to be venomous like the other Latrodectus members, and although no bites by this spider are recorded in the medical literature, a bite has been captured on video and documented by biologist Spencer Hoffman on the YouTube channel MyWildBackyard on April 15, 2023. The bite resulted in a mildly painful throbbing sensation that lasted several hours. Unlike cosmopolitan species such as the black and brown widows, it seldom comes into contact with humans. The median lethal dose (LD50) of the spider's venom has been measured in mice as 2.20 mg/kg (with a confidence interval of 1.29-3.74), and each spider contains about 0.157 mg.
Where it lives
Recorded sightings
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geo-referenced records in GBIF, from museums, herbaria and field observers.
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In the stacks
Searching the stacks…
Every page naming Latrodectus bishopi in the Biodiversity Heritage Library →
This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 222755.