San Francisco’s Venomous Spiders

San Francisco’s Venomous Spiders

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Swipe to discover San Francisco’s Venomous Spiders: 

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According to the San Francisco Bay Wildlife website, over 400 spider species have been documented in the region

Distinctive hourglass-shaped patterns on their abdomen and formidable venom

Black Widow Spiders

Black Widow Spiders

Female black widow spiders are larger, measuring around 0.5 inches in body length

Black Widow Spiders

Prefer dark, sheltered areas such as woodpiles, garages, and outdoor structures

Brown Recluse 

Light brown color, these spiders have a recognizable violin-shaped back marking

Brown Recluse

They can be found in secluded areas, such as attics, basements, and woodpiles

Brown Recluse

Desert recluse spiders are typically nocturnal and are shy and reclusive

The Importance of Spiders in the Ecosystem:

Pest Control:

Feeding on various insects and other arthropods. By preying on pests such as mosquitoes, flies, and aphids, spiders help to regulate populations and reduce the need for chemical insecticides

Web Engineering:

weaving intricate webs, spiders demonstrate unparalleled engineering skills. These silk structures not only serve as hunting traps but also contribute to the overall stability of ecosystems by capturing and recycling organic matter

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