Updated as per James P. Tuttle's The Hawk Moths of North America, February 12, 2011
Dedicated/updated as per personal communication with Greg Volkman (Arctonotus lucidus, Rufus, February 8, 2011): February 12, 2011

Sherman County, Oregon

Sphingidae

Arctonotus lucidus, Rufus, Sherman County, Oregon,
February 8, 2011, courtesy of Greg Volkman.

This page is dedicated to Greg Volkman who has sent the images of Arctonotus lucidus at top and bottom of this page.

Greg writes, February 12, 2011: "I found this little guy resting on the cold concrete with the air temperature right around freezing. I don't really think of February as being moth weather so I moved him to a sunny location on a nearby tree. I hope he recovered enough to do what he had to do. What a beautiful little animal! The wing linings were almost gold. It is a shame so many people hate insects across the board and don't think twice about using the sprays or the bug lights. I'm 53 now and I certainly don't see the numbers or the diversity I saw as a child.

"I have these and a couple other images in higher resolution if you are interested. I would be happy to send them to you."

Twenty-three Sphingidae species are listed in the USGS for Oregon. Not all of the species are reported (five by USGS) or anticipated in Sherman 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 Sherman 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 Bill Oehlke.

Sphinginae subfamily

Sphingini Tribe:

Manduca quinquemaculatus WO, the Five-spotted Hawkmoth
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 drupiferarum WO, the Wild Cherry Sphinx
Although not reported from Sherman County, I suspect it is present. I only see them occasionally on P.E.I. despite visiting lights frequently.

Sphinx perelegans WO, the Elegant Sphinx
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.

Sphinx vashti WO, the Snowberry Sphinx,
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.

Smerinthini Tribe:

Pachysphinx occidentalis USGS, the Big Poplar Sphinx
This one is quite similar to Pachysphinx modesta, with modesta being smaller and darker.
They are confirmed in Sherman County.

Paonias excaecata WO, the Blinded Sphinx,
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.

Paonias myops USGS, the Small-eyed Sphinx
This small species is probably widespread and common. This species ranges across North America.
The hindwings have a small blue eyespot ringed with black on a yellow background.

Smerinthus cerisyi WO, 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.

Macroglossinae subfamily

Dilophonotini Tribe:

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.

Macroglossini Tribe:

Arctonotus lucidus GV, the Pacific Green Sphinx Moth or Bear Sphinx
This species is now confirmed in Sherman County.
It tends to be a winter to early spring flier, on the wing in the early evening. It comes to lights at night and can fly at temperatures at least as low as 35 F (EW).
Arctonotus lucidus, Rufus, February 8, 2011, courtesy of Greg Volkman

Hyles lineata WO, 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.

Proserpinus clarkiae WO, Clark's Sphinx,
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 WO, the Yellow-banded Day Sphinx,
Proserpinus flavofasciata adults fly from April-June in meadows in coniferous forests. Adults fly during the afternoon, nectaring from lilac, dandelion, cherry, etc.

Arctonotus lucidus, Rufus, Sherman County, Oregon,
February 8, 2011, courtesy of Greg Volkman.

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Sherman County, Oregon

Sphingidae

Arctonotus lucidus, Rufus, Sherman County, Oregon, February 8, 2011, courtesy of Greg Volkman.

Sphinginae subfamily

Sphingini Tribe:

Manduca quinquemaculatus WO, the Five-spotted Hawkmoth 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 drupiferarum WO, the Wild Cherry Sphinx Although not reported from Sherman County, I suspect it is present. I only see them occasionally on P.E.I. despite visiting lights frequently.

Sphinx perelegans WO, the Elegant Sphinx 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.

Smerinthini Tribe:

Pachysphinx occidentalis USGS, the Big Poplar Sphinx This one is quite similar to Pachysphinx modesta, with modesta being smaller and darker. They are confirmed in Sherman County.

Paonias excaecata WO, the Blinded Sphinx, 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.

Paonias myops USGS, the Small-eyed Sphinx This small species is probably widespread and common. This species ranges across North America. The hindwings have a small blue eyespot ringed with black on a yellow background.

Smerinthus cerisyi WO, 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.

Macroglossinae subfamily

Dilophonotini Tribe:

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.

Macroglossini Tribe:

Arctonotus lucidus GV, the Pacific Green Sphinx Moth or Bear SphinxThis species is now confirmed in Sherman County. It tends to be a winter to early spring flier, on the wing in the early evening. It comes to lights at night and can fly at temperatures at least as low as 35 F (EW).

Hyles lineata WO, 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.

Proserpinus clarkiae WO, Clark's Sphinx, 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 WO, the Yellow-banded Day Sphinx, Proserpinus flavofasciata adults fly from April-June in meadows in coniferous forests. Adults fly during the afternoon, nectaring from lilac, dandelion, cherry, etc.

Arctonotus lucidus, Rufus, Sherman County, Oregon,
February 8, 2011, courtesy of Greg Volkman.

Manduca quinquemaculatus WO, the Five-spotted Hawkmoth
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 drupiferarum WO, the Wild Cherry Sphinx
Although not reported from Sherman County, I suspect it is present. I only see them occasionally on P.E.I. despite visiting lights frequently.

Sphinx perelegans WO, the Elegant Sphinx
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.

Pachysphinx occidentalis USGS, the Big Poplar Sphinx
This one is quite similar to Pachysphinx modesta, with modesta being smaller and darker.
They are confirmed in Sherman County.

Paonias excaecata WO, the Blinded Sphinx,
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.

Paonias myops USGS, the Small-eyed Sphinx
This small species is probably widespread and common. This species ranges across North America.
The hindwings have a small blue eyespot ringed with black on a yellow background.

Smerinthus cerisyi WO, 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.

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.

Arctonotus lucidus GV, the Pacific Green Sphinx Moth or Bear Sphinx
This species is now confirmed in Sherman County.
It tends to be a winter to early spring flier, on the wing in the early evening. It comes to lights at night and can fly at temperatures at least as low as 35 F (EW).

Hyles lineata WO, 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.

Proserpinus clarkiae WO, Clark's Sphinx,
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 WO, the Yellow-banded Day Sphinx,
Proserpinus flavofasciata adults fly from April-June in meadows in coniferous forests. Adults fly during the afternoon, nectaring from lilac, dandelion, cherry, etc.