Spined Micrathena Spider (Micrathena gracilis)
Detailing the physical features, habits, territorial reach and other identifying qualities of the Spined Micrathena Spider.
Updated: 1/30/2018; Authored By Staff Writer; Content ©www.InsectIdentification.org
The thorny spikes and bumps on the abdomen of the Spined Micrathena Spider are not typically found on Orbweavers.
The ridges on the abdomen of the female spider are believed to render it unappetizing to predators. The pointy spines would hurt the mouth of the predator, making the Spined Micrathena Spider not worth the meal. The coloration may act as camouflage since this species resides in dense forests where specks of light may be all that gets through to the forest floor. That said, colors vary per individual. Some are very brown, others all black and white.
The male lacks the sharp ridges and may be more white or more black in color. Their waists are more narrow than females. Females sit in the center of the web, waiting for insects to get trapped by the silk threads. As an Orbweaver Spider, the web is built in a circle or spiral shape. Orbweavers tend to rebuild their webs every day. This species is most active in the summer and can be found in dense woods or forests.