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Updated as per James P. Tuttle's The Hawk Moths of North America, July 20, 2010
Updated as per Butterflies and Moths of North America website, formerly USGS; July 20, 2010
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Mason County
Sphingidae
Seventeen Sphingidae species are listed for Washington. Not all of the species are reported or anticipated in Mason County
in northern Washington. It is hoped that this checklist, with the thumbnails and notes, will help you
quickly identify the moths you have encountered.
The Cascades seem to be a barrier to some of the more eastern species.
A "USGS" indicates the moth is reported in USGS 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.
A "WO" after the species name indicates that
I have no confirmed reports of this species in Mason County, but I (William Oehlke) expect that this moth is or might be 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:
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This species is possibly present (unreported) and larvae feed on
tomatoes and go by the common name of
"Tomato Hornworms". |
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There is a broad greyish-white forewing costal area. Most of the rest of the forewing is a dark slate grey
with some thin black streaks. There are some white areas near the outer margin.
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| The upperside of the forewing is dark grey to black with a
paler costa and pale area from the base to the wing's centre.
Prefered habitats include montane woodlands and mixed chaparral-type
vegetation. |
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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 running inwards from the apex of the wing.
It is most often found in montane woodlands and along streamcourses. |
Smerinthini Tribe:
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Pachysphinx modesta WO, more likely P. occidentalis ,
the Modest Sphinx or Poplar Sphinx. This large poplar/willow feeder is probably quite common in Whatcom.
They are a heavy bodied species. Easily confused with P. occidentalis,
which might also be present. Forewing lines more diffuse than in P. occidentalis.
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Pachysphinx occidentalis WO,
the Big Poplar Sphinx.
This one is quite similar to Pachysphinx modesta, with modesta
being smaller and darker.
If you've got willows or poplars nearby, then you probably have
occidentalis in your immediate area. generally more southerly in Washington
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The grey-blue eyespot (without a black center pupil) of the hindwing gives this species its name.
Larvae feed on birches, willows, cherries and oaks.
The outer edge of the forewings is quite scalloped. |
| Larvae feed on poplars, aspen and willows.
Note different shape of double arced forewing pm line compared to the straighter pm line of cerisyi, which it replaces in WA.
S. ophthalmica has smoother scalloping of the fw outer margin.
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Macroglossinae subfamily
Dilophonotini tribe:
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Hemaris thetis is a very variable species, but almost always the abdomen sports contrasting black and
yellow hairs, the ventral surface being quite black. The legs also tend to be quite dark and there is a black mask
running across the eye and along the sides of the thorax.
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Hemaris thysbe WO, the Hummingbird Clearwing,
Many gardeners mistake this moth for a small hummingbird as it
hovers, sipping nectar from flowers through a long feeding tube.
Flight is probably from late May-July and possibly again in the fall. possibility
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Macroglossini tribe:
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Hyles gallii WO,
the Bedstraw Hawk Moth or Gallium Sphinx
There is a broad, irregular, creamy-white band running diagonally across the dull brown forewing.
There is a grey area along the fw outer margin.
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Hyles lineata WO, the White-lined Sphinx
This species is very widespread. It can be seen flying during the day,
into the evening and also at night.
The highly variable larvae are often found in people's gardens. |
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This day flier, April-June, prefering oak woodland and pine-oak
woodland in foothills, is confirmed by Bob Pyle. Moths nectar at a
variety of flowers in the afternoon.
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Proserpinus flavofasciata WO,
the Yellow-banded Day Sphinx
Fw upperside is medium to dark brown with a faint to distinct white median band.
Hw upperside is dark brown with a wide orange median band which may not reach the inner margin.
The moth mimics a bumblebee.
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Enjoy some of nature's wonderments, giant silk moth cocoons.
These cocoons are for sale winter and fall. Beautiful Saturniidae moths will emerge the following spring and summer.
Read Actias luna rearing article. Additional online help available.
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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.
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