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Triangulate cobweb spider

Triangulate cobweb spider

Steatoda triangulosa

A species of False widows, Also known as Triangulate combfoot, Zig-zag false widow spider

The triangulate cobweb spider is most likely to be found in quiet corners of houses, basements, sheds, and outhouses. It has a variety of prey including other spiders, ants, ticks, and pillbugs. Although other species within the Steatoda genus have been observed to have venomous bites, there are no known cases of these in humans by the triangulate cobweb spider.

Toxic to Humans
Toxic to Humans
Toxic to Animals
Toxic to Animals
Bite Humans
Bite Humans
General Info About Triangulate cobweb spider
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Attributes of Triangulate cobweb spider
Colors
Brown
Black
Gray
Habitat
dirt area; man-made structure
Adult Food Sources
Flies, mosquitoes, moths, larger spiders, insects of appropriate size
Larva Food Source
Fruit flies (drosophila spp.), small caterpillars, aphids, mite larvae, tiny spiders
Biting/stinging
Not reported
Allergy-causing
Not reported
Defensive attack
Not reported
Pest-Eating Predatory
Not reported
Phytophagous
Not reported
Predatory
The Triangulate cobweb spider typically preys on other arthropods and does not directly affect plants.
Biting animal or pet
Yes
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Species Status of Triangulate cobweb spider
It is a cosmopolitan species, and is found in many parts of the world, including across North America, in southern Russia, New Zealand, and Europe. The spider is believed to be native to Eurasia and introduced elsewhere.
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Distribution Area of Triangulate cobweb spider
North America, Southern Russia, New Zealand, Europe
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Predators of Triangulate cobweb spider Larvae
Birds, larger spiders, predatory insects, mammals
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Predators of Adult Triangulate cobweb spider
Birds, wasps, larger spiders, predatory insects, mammals
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Interesting Facts About Triangulate cobweb spider
Despite its size, triangulate cobweb spider can immobilize prey much larger than itself, using its surprisingly potent venom to subdue the unexpected victims.
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Scientific Classification of Triangulate cobweb spider
Tips for Finding Triangulate cobweb spider
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Youth Habitat of Triangulate cobweb spider
Urban and Suburban Areas, Building Structures and Dwellings, Rotting and Decaying Matter
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Adult Habitat of Triangulate cobweb spider
Urban and Suburban Areas, Building Structures and Dwellings, Rotting and Decaying Matter
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What is the Best Weather to Observe Triangulate cobweb spider
Spiders such as triangulate cobweb spider typically prefer warm and dry conditions but not too hot as it might lead to dehydration. Avoid searching during heavy rain or extreme temperatures.
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How and Where Can You Find Triangulate cobweb spider at Different Life Stages
Juvenile Triangulate cobweb spider juveniles are smaller and not as easily spotted as adults. They tend to hide in small crevices or under objects for protection. To locate them, one can check under rocks, logs, or leaf litter.
Adult Triangulate cobweb spider adults are most likely to be found in web structures, which are often constructed in corners of rooms, windows, or less disturbed areas. To find an adult triangulate cobweb spider, look for webs around structures or plants, using a flashlight at night to reveal the reflective silk.
During the reproductive stage, triangulate cobweb spider can be found near egg sacs. To find triangulate cobweb spider at this stage, search for characteristic egg sacs which are typically silk and may be located within the web structure, or nearby. Handle with care to avoid disturbing breeding spiders or damage to the sacs.
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Harmful Effects of Triangulate cobweb spider
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Toxic to Humans
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Toxic to Animals
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Bite Humans
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Toxic to Humans

Triangulate cobweb spider possesses a venom that can elicit a mild toxic reaction in humans. Using neurotoxins delivered through fangs, triangulate cobweb spider predates on insects and defends itself when threatened. Human encounters could result in symptoms such as localized pain or discomfort, typically resolving without severe complications.

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Toxic to Animals

Triangulate cobweb spider is known for its mild but effective toxin, delivered through bites via fangs. The toxin serves both offensive and defensive purposes. Animals such as humans, dogs, cats, and small mammals may experience discomfort and typical symptoms following an envenomation, whereas other arthropods are more likely to be incapacitated or killed, given their smaller size and different physiological reactions to the toxin. Juveniles and adults of triangulate cobweb spider possess the ability to envenomate, making encounters with them a concern for those prone to allergies or with sensitivity to venom.

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Bite Humans

Triangulate cobweb spider is typically non-aggressive towards humans and bites are rare, occurring mostly in self-defense when provoked or trapped against skin. The spider's bites are believed to have minimal consequences, causing mild discomfort similar to a bee sting without long-term adverse effects.

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