Crablike Spiny Orb Web Weaver
(Gastercantha elipsoides)

Crab Orb Weaver
Photo by permission of Jane Adams

Seasons in Walnut Creek: Year-round resident

Orb web weaver spiders are usually about 7mm long, but the female spiders are larger than the male spiders. Their webs are about 50cm in diameter and have as many as 30 loops of spirals spaced in 3mm intervals.

Key Field Marks:

Key Behaviors:

Habit and Range:

Walnut Creek Sighting: Found in web in flood plain west of State Street on a rainy day in late October.

Crab Orb Weaver
Photo by permission of Jane Adams

This page prepared by 8th grader Wesley S.
Exploris Middle School - Fall 2008