Subject: Handsome moth
Geographic location of the bug: Terrebonne, Oregon
Time: 12:58 AM EDT
Your letter to the bugman: I found this fellow on my porch railing. I was wondering what kind it is.
How you want your letter signed: Marietta
Your image is lovely. We believe this is a Big Poplar Sphinx, Pachysphinx occidentalis, based on images and information on the Sphingidae of the Americas site where it states it “flies in riparian areas and suburbs from Alberta and North Dakota west to eastern Washington; south to Texas, Arizona, southern California, and Baja California Norte.” Because of the lack of feathering on the antennae, your individual is a female, additionally evidenced by her plump, egg-filled abdomen.