Template:POTD/2010-09-17
Appearance
An Argiope species of orb-weaver spider sitting on a stabilimentum, the conspicuous silk structure at the center of the web. The purpose of these objects is unknown, although there are a number of theories. It was originally believed to help stabilize the web (hence the term stabilimentum), but this idea is dismissed nowadays.Photo: Muhammad Mahdi Karim