Photo: Spider

Photo: Spider

An ugly spider with red spikes.

Spiny Backed Orb Weaver (Gaster Acantha)

The most colorful and easily recognized Florida spider, having what looks like a white and black spotted shell on its back, and 6 pointy red spines. The web contains tufts of silk, probably to prevent birds from flying into it.

Females are 5mm to 10mm long, 10mm to 14mm wide. They hang in the center of the web.

The bite of the Spiny Backed Orb Weaver is not known to cause serious reactions in humans.


Fujifilm FinePix A360, 1/30, F2.8, 5.8mm, ISO100, 2005-12-20T15:42:37-05, 2005-12-20_15h42m37

Location: Thripp Residence, Ormond Beach, FL  32174-7227

Download the high-res JPEG or download the source image.

This work is licensed under a Creative Commons Attribution 3.0 License. Please credit me as “Photo by Richard Thripp” or something similar.