Shamrock Orbweaver Araneus trifolium
Shamrock Orbweaver Araneus trifolium
cbell2Shamrock Orbweaver Araneus trifolium
Shamrock Orbweaver Araneus trifolium
Shamrock Orbweaver Araneus trifolium
Shamrock Orbweaver Araneus trifolium

Shamrock Orbweaver Araneus trifolium

Araneus trifolium females are common in our yard* in late summer through early fall. They typically make bowers—also, but less poetically, called “retreats”—ranging from simple to elaborate. The bower is usually about 1 meter off the ground, typically made of grass strands and/or seed heads tied together with silk, around 3 cm wide, and located to the side of the web. Webs often appear to be suspended from a stout, horizontal strand of silk that can be several feet long.

1. male and female 2. male (measured) 3. web, bower to left

4. female (measured) 5. female ventral 5. bower

I took some of these photos using fill flash. I took most of these photos over a period of a few days in late August through mid September, 2010.

Slideshow | Bugguide.net female | Bugguide.net male

* About 2,000 feet elevation south of Port Angeles, WA.