AB Pest Control

SPINY-BACKED ORB WEAVER SPIDERS

SPINY-BACKED ORB WEAVER SPIDERS

(GASTERACANTHA SPP.)

CHARACTERISTICS

SIZE: Up to three quarters of an inch in body length with an extremely thin shape.
COLOR: Pale whitish or cream.
BEHAVIOR: Cellar spiders spin large, tangled webs and hang upside down within the web. When disturbed, they shake the web violently. They are not dangerous spiders and actually are quite beneficial in that they have been known to capture and eat other spiders, including even black widow and brown recluse spiders. Once their web becomes old and unusable, cellar spiders construct additional webbing attached to the old web. Over time, considerable amounts of cobwebs can accumulate.

HABITATS

This spider is common along the southeast coast of the United States and is a regular inhabitant of yards in Florida.

TIPS FOR CONTROL

Spiny-backed orb weavers are not dangerous and are beneficial animals. They should not be killed if at all possible. In situations where numerous spiders are present, the webs can be regularly knocked down. Steps should then be taken to determine what conditions are attracting so many insects to a home where such a large number of spiders can feed. You may want to switch exterior light fixtures to yellow “bug lights,” which attract far fewer flying insects.
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