Spiny-Backed Orb Weaver

The Spiny-Back Orb Weaver is a member of the orb weaver family Araneidae. Its shell-like abdomen and conspicuous spikes make it one of Georgia's most distinctive orb weaver spiders. It can be found all across North and South America, as well as in some regions of Central Asia.

Male spiny-backed orb weavers are 2-3 millimeters long, compared to 5 to 9 millimeters for females. Additionally, only the females have the species' identifying six spines along the abdomen. Females with white upper abdomens typically have red or black spines, though there are other color variations. Males often have grey abdomens with white markings and many stubby projections in place of spines. Spiny-backed orb weavers like to build their webs in lightly wooded areas in regions with warm, wet climates. They prey on many garden pests and their bite poses little threat to humans.