Day 3 Moth Week: Harris's Three-spotted Moth

This cool moth was clinging to our stoop door the other night in the rain. It's one of the prettier, more detailed moths that I've seen just "hanging out." And it's amazingly common. But it took National Moth Week to motivate me enough to actually research it.

It also took me nearly an hour of perusing the awesome site BugGuide.net to ID it, but the fact that I was even able to ID it is pretty impressive. Must make a note to send a donation to BugGuide; they're fabulous.

Getting back to this intricately patterned moth... from various Googling activities, it seems the Harris's Three-spot  (Harrisimemna trisignata) is a type of Dagger Moth, breeding in hardwood forests. Unfortunately, I didn't find a whole lot of info on this moth, but the reference to its "bird poop-like" larva of course lured me to Google that. Immediately prompting an "eeks!" when I saw it (you've been forewarned). Holy cow. How does that turn into this? Amazing.

I did learn that the bizarre pose of the Harrisimemna trisignata is its typical alarm posture. What critter wouldn't find that threatening and leave it alone? And, if you don't leave it alone? Apparently there is a gland that secretes nasty scents on its lower abdomen (hence the rearing).


Well, now I know more about the larva than the moth. Still, pretty cool to learn new things. Thanks National Moth Week! (follow the fun at #NMW2012 and #NationalMothWeek)


(And many thanks to the Entomological Society of Washington for publishing their proceedings. Much of the info on the larva was gleaned from their papers.)

Day 1 of Moth Week: Snowberry Clearwing

Thought I'd celebrate the start of the first National Moth Week with one of my favorite moths: the Snowberry Clearwing (Hermaris diffinis).

The snowberry is one of three types of hummingbird moths that are commonly found in Minnesota. The others are the Hummingbird Clearwing, Hemaris thysbe, easily distinguished by its much redder color; and the Slender Clearwing, Hemaris gracilis, distinguished from the Hummingbird Clearwing by its reddish brown dorsal stripe. The fourth Hemaris found in the U.S. is found only west of the Rockies and is the Western Snowberry Clearwing (Hemaris thetis).

The snowberry found here in Minnesota and elsewhere east of the Continental Divide dines on milkweed, liatris, beebalm, phlox, honeysuckle and verbena. Even though they're called "hummingbird moths" I think the snowberry seems to mimic big fuzzy bumblebees more than hummingbirds.

Here's another Snowberry that kindly held still for photos:

I love their furry coats. Wonder if they're as soft as they look...

Are you participating in National Moth Week? Post a comment with a link to your blog and I'll include it in this week's posts!