Subject: Large green caterpillar with blue tail.
Geographic location of the bug: City of Lake Forest Park, WA
Time: 08:26 PM EDT
Your letter to the bugman: This thing fell out of a willow tree onto our deck on 7-15-2019. It has a yellow band around its head and a blue horn near its rear. A close match I found is the Limehawk Moth caterpillar, but it’s on the wrong continent for that (indigenous to UK), and the rear end is different. I have it contained until I can positively ID it and that it’s not invasive or harmful.
How you want your letter signed: Greg Goebel
We identified your Hornworm from the family Sphingidae as Smerinthus ophthalmica based on images on the Sphingidae of the Americas site. Alas this beautiful moth has no common name, and we believe this might be our first image of a Hornworm from this species posted to our site.