Subject: Spider-like bug with a “skirt”
Location: Northern indiana
August 11, 2014 1:49 pm
We live in northern Indiana. We found what at first glance looked like a spider, but upon closer inspection appears to be an insect. It even behaved like a spider, running gracefully along a web. These photos were taken on August 11, 2014 around 5:00 pm. The bug was about a half inch long. I would love to know what it is.
Signature: Louann

Spined Micrathena

Spined Micrathena

Hi Louann,
This is a Spiny Orbweaver in the genus
Micrathena, commonly called the Spined Micrathena, Micrathena gracilis.  You can compare your image to this image on BugGuide.  According to BugGuide:  “Females are mostly white or pale yellow, mottled with black or brown. They have ten spines on the chunky abdomen. Size 8 – 10 mm.”  Your individual is a female.  She is perfectly harmless to humans. 

Thank you so much! I’ve never seen one before!

Location: Northern Indiana

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