Twenty-three Sphingidae species are listed in the USGS for Oregon.
Not all of the species are reported (five by USGS,
Proserpinus clarkiae and
or anticipated in Polk County.
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 Polk County, but I
(William Oehlke) expect that this moth is present.
Please help me develop this list with improved, documented accuracy by
sending sightings (species, date, location), preferably with an
image, via email to
This large bodied moth flies in tobacco fields and vegetable gardens
(potatoes, tomatoes) and wherever host plants are found.
Sphinx chersis WO, the Northern Ash
Sphinx or Great Ash Sphinx
The upperside of the forewing is soft dark gray to blue-gray with a series of black dashes,
one of which reaches the wing tip.
Sphinx perelegans adults fly in montane woodlands and mixed chaparral-type vegetation as a single brood
in the north, with adults mainly on the wing in June and July.
It flies from dusk until after midnight.
Snowberry Sphinx adults fly as a single brood in montane woodlands and along prairie
streamcourses from April to August.
The upperside of the forewing has a narrow black subterminal line
bordered by a white inverted V-shaped line on the outside, and a
black line at the apex.
The outer margin of the forewing is quite wavy. There is a dark cell spot and a dark oblique line mid wing from the costa almost to the
inner margin. Basic ground colour is pinkish brown.
Flight would be June-July.
Smerinthus cerisyi USGS, the Cerisyi's
Sphinx or One-eyed Sphinx,
Larvae feed on poplars and willows.
Flight would be from late May-July as a single brood.
Larvae feed on poplars, aspen and willows.
Note different shape of double arced forewing pm line compared to the straighter pm line of cerisyi, directly above.
S. ophthalmica has smoother scalloping of the fw outer margin.
Hemaris diffinis USGS, the Snowberry Clearwing or Bumblebee Moth,
The moth flies along forest edges and in meadows, gardens and
brushy fields. Day-flying adults nectar at lantana, dwarf bush honeysuckle,
snowberry, orange hawkweed, thistles, lilac, Canada violet, etc.
Hyles lineata USGS, the White-lined Sphinx
Adults usually fly at dusk, during the night, and at dawn, but they
also fly during the day over a wide variety of open habitats
including deserts, suburbs, and gardens.
Adults fly in the afternoon from April-June in oak woodland and
pine-oak woodland in foothills, nectaring from chia, heartleaf
milkweed, golden currant, bluedicks, fairyfans, vetches,
thistles, hedgenettles, etc.
Proserpinus flavofasciata adults fly from
April-June in meadows in coniferous forests. Adults fly during the
afternoon, nectaring from lilac, dandelion, cherry, etc.
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This page is brought to you by
Bill Oehlke and the
WLSS. Pages are on space rented from Bizland. If you would like
to become a "Patron of the Sphingidae Site", contact Bill.
Please send sightings/images to Bill. I will do my best to respond to
requests for identification help.
Enjoy some of nature's wonderments: Saturniidae cocoons.
Cocoons of the giant silkmoths may be purchased in the fall and winter. Big and beautiful giant silk moths will emerge in spring/summer.
Read Actias luna rearing article. Additional online help available.