Posts Tagged ‘stabilimentum’

During my recent visits to Jackson Miles Abbott Wetland Refuge, I have noticed the reappearance of Black and Yellow Garden Orbweaver Spiders (Argiope aurantia). During the late summer and early fall, these relatively large spiders can be seen in the vegetation surrounding the pond and in the adjacent fields.

One of the coolest things about this spider is the distinctive zig-zag pattern, known technically as a stabilimentum that the spider uses for the central part of its web. According to Wikipedia, the purpose of the zig-zags is disputed. “It is possible that it acts as camouflage for the spider lurking in the web’s center, but it may also attract insect prey, or even warn birds of the presence of the otherwise difficult-to-see web.”

Argiope aurantia

© Michael Q. Powell. All rights reserved.

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