This large bodied moth flies in tobacco fields and vegetable gardens
(potatoes, tomatoes) and wherever host plants are found. Questionable
Sphinx chersis prepupal larva, Portland Oregon, September 14, 2006, Sarah Durham
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.
WO, the Wild Cherry
Forewings, long and slender, are held close to the body when the
moth is at rest. We have them on P.E.I., but I do not see them nearly as frequently
as I see the other Sphingidae.
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. Questionable.
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.
This one is quite similar to Pachysphinx modesta, with modesta
being smaller and darker.
Moths should be on the wing from June-August.
Paonias excaecata, west of Portland, July 23, 2011; * = 5039569170
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.
USGS/WI, 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.
Smerinthus cerisyi (possibly/probably ophthalmica), Portland, July 21, 2006, courtesy of Wendy
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 thetis WO, the Thetis Clearwing or Bee Hawk 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 gallii WO, the Bedstraw Hawk Moth or Gallium Sphinx
Larvae feed on Epilobium angustifolium and Galium.
flight is late May-July with a possible fall flight as well. Questionable!, generally more easterly
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.