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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).
Parasites of the egg sacs include the flightless scelionid wasp Baeus latrodecti, [20] and members of the chloropid fly genus Pseudogaurax. Predators of the adult spiders include the brown widow spider, Latrodectus geometricus, [21] wasps, most notably the blue mud dauber Chalybion californicum, and the spider wasp Tastiotenia festiva.
I live in Tampa Florida and have never heard of Brown Widow Spiders before this last week. Since identifying the spider hanging from an oak tree in our yard, we have since located more than 12 adult brown widow spiders, as well as countless egg sacs and baby spiders on our property (1 lot, basic house and yard).
The black widow’s venom can be dangerous to people — especially small children and older adults with ... as well as red and brown widows. ... Vacuuming can also help get rid of any egg sacs ...
Footage goes viral after egg sac reveals horrifying surprise. Justin Chan. Updated October 14, 2019 at 8:04 PM.
The eggs are round, about the size of a mustard seed, and are a transparent, purplish red. They are held together in a cream-coloured, round, ball shaped egg sac which is about 12 millimetres (0.47 in) in diameter. The female constructs five or six egg sacs over the next three to four weeks. Each egg sac contains about 70 to 90 fertilised eggs.
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The egg sacs are spherical or pear-shaped. When the egg sacs are produced a first layer of loose silk is wrapped around the eggs and then a second layer of denser silk is added. The egg sacs are about 5-12mm in diameter and are suspended by threads inside the brooding chamber. Each egg sac contains 94 eggs on an average but the numbers can ...