September 2, 2009
Since you recently posted a prominent moth caterpillar, I thought you might like this image of an adult (albeit a different species). Using Bugguide, I believe I have identified it as a Sigmoid Prominent Moth, Clostera albosigma.
I found this moth on the wall of an outhouse at Huntington Lake, in the Sierras east of Fresno, CA. The date was mid or early July. Unfortunately, the lighting in the outhouse was not designed for great photography.
This moth was holding very still, and was in the same position two days in a row. I actually thought it was a cocoon. Then on the third day it moved to different wall in the same restroom, and I caught a glimpse of its legs. When I poked it to see if it would move, I found that the knob on the back end of its body is soft, like a brush. I’m wondering if this protrusion acts as a false head to deceive predators.
Huntington Lake, CA
Thanks for identifying your Prominent Moth for us. We are also creating a Prominent Moth page to accommodate your submission. We are also posting your blurry image that has good color, and your sharp image that is polluted by the light source.