This page is inspired by and dedicated to the Karl and Ingrid Ryder family who sent me the image of Hyles euphorbiae at the top of the page.
Ingrid writes, "Hi there. We found this caterpillar just yesterday (07/29/06) while out for a family walk. We live in Great Falls, Montana (Cascade County). We looked through your Sphinginae subfamily pictures but couldn't identify this dark red caterpillar whom my five year old son said looks like Spiderman. Notice the much smaller green version on the same stem.
"This caterpillar is a monster and not surprisingly, we saw a few humongous moths here this spring, early summer, including a hummingbird moth just a few days ago eating nectar out of my nicotiana flowers. We have never seen so many large moths around. Thanks for the look.."
Hyles euphorbiae was introduced from Europe to try to control leafy spurge. The moth seems to be doing very well in North America and its range seems to be expanding. Earlier this year I received images of adults from South Dakota.
Ingrid also sent the beautiful image of the Ceratomia undulosa moth, below.
Ceratomia undulosa, May 15, 2006, Great Falls, Montana,
courtesy of Ingrid Ryder.
It is hoped that this checklist, with the thumbnails and notes, will help you quickly identify the moths you have encountered.
A "WO" after the species name indicates that I have no confirmed reports of this species in Cascade County, but I (William Oehlke) expect that this moth is present or might be present. A USGS indicates the moth is reported on the USGS website and/or in Moths of Western North America, #2. Distribution of Sphingidae of Western North America, revised, an excellent little booklet available through Paul Opler.
Please help me develop this list with improved, documented accuracy by sending sightings (species, date, location), preferably with an image, via email to Bill Oehlke.
Many thanks to Sandra Rumney who confirms Pachysphinx occidentalis and Paoanias myops in Cascade, Cascade County.
Pachysphinx occidentalis, Cascade, Cascade County, Montana,
June 23, 2014, courtesy of Sandra Rumney.
Paonias myops, Cascade, Cascade County, Montana,
July 6, 2014, courtesy of Sandra Rumney.
Sphinginae subfamily
Smerinthini Tribe:
Macroglossinae subfamilyDilophonotini tribe
Macroglossini tribe
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