Sphinginae subfamily
 Sphingini tribe:
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Ceratomia amyntor
 WO,  Elm Sphinx;  Four-horned Sphinx: Both brown and green forms and are unmistakeable
due to four horns on thorax (near the head). Elm (Ulmus), birch (Betula), basswood (Tilia), and 
cherry (Prunus). |   
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Ceratomia undulosa 
WO, Waved Sphinx: Pinkish-orange tail, spiracles outlined in red; cream
stripes on head. Dramatic color change from dorsal 
yellow-green to lateral light greyish-blue is not always
as intense as in this image.
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Dolba hyloeus WO, Pawpaw Sphinx: Smooth skin, blue-black horn, small black spiracles.
Pawpaw, littleleaf sweetfern, possum haw,inkberry, tall gallberry holly and others are also utilized. 
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Lapara bombycoides  WO, Northern Pine Sphinx:
Without  anal horn and feeds on pines. The long stripes and reddish brown afford great camouflage.
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Lintneria eremitus
 WO, Hermit Sphinx:
Note triangular bump on thorax. Beebalm (Monarda), mints (Mentha), bugleweed (Lycopis), 
 sage (Salvia). 
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Manduca quinquemaculatus 
 WO, Five-spotted Hawkmoth:
Note  solid black horn; dark spiracular rings. In addition to white
oblique lines, there are fainter white rings, especially on back.
I suspect if you grow tomatoes, you are likely to encounter it.
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 | Sphinx canadensis  WO, 
Sphinx canadensis,  Canadian Sphinx: Uncommon at lights,  not often reported anywhere.
Larval host may be exclusively black ash (Fraxinus nigra).
Variable appearance but always with granulous (darker protrusions) on pinkish horn.
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Sphinx chersis  WO, Northern Ash Sphinx, Great Ash Sphinx
Pale blue horn; creamy-white stripes on head. Yellow form has  red horn. Ash, lilac, privet, cherry and quaking aspen. 
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Sphinx drupiferarum
 WO, Wild Cherry Sphinx: Larvae hide by day, feed primarily on cherry, plum, apple 
at night. Amelanchier nantuckensis in Massachusetts; reared to pupation in Michigan on 
Prunus serotina. Note purple oblique lines.
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Sphinx gordiusWO,Apple Sphinx:
Apple (Malus), sweetfern (Myrica), Carolina rose (Rosa carolina), blueberry, huckleberry 
(Vaccinium), white spruce (Picea glauca), American larch (Larix laricina), alder (Alnus). 
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Sphinx kalmiae  WO, Laurel Sphinx:
In the final instar, the black on the head, lateral lines, horn and on abdominal 
legs is diagnostic.Larvae feed primarily on lilac and fringe.
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Sphinx luscitiosa  
 WO, 
the Canadian Sphinx or 
Clemen's Sphinx:
Larval hosts are willow (Salix), poplar (Populus), birch (Betula), apple (Malus), ash (Fraxinus), waxmyrtle 
(Morella), and northern bayberry. 
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If you have blueberries in the woods, then you probably have the 
Poecila Sphinx.  
The green form is more common.
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Smerinthini Tribe:
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Amorpha juglandis 
 WO, 
the Walnut Sphinx:
Amorpha juglandis larvae feed upon Walnut and butternut (Juglans),
 hickory (Carya), alder (Alnus), beech (Fagus), 
hazelnut (Corylus), and hop-hornbeam (Ostrya).
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Pachysphinx modesta
 WO,  
the Modest Sphinx or Poplar Sphinx:
The anal horn is very rudimantary in final inistar. It is fond 
of poplars and 
willows.
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Paonias excaecata
 WO, 
the Blinded Sphinx:
Larvae accept willows, birches, and cherries. 
I have also found them in the wild on oak in eastern Canada.
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Paonias myops
 WO,
the Small-eyed Sphinx:
Wild cherry species are the favorites as larval foodplants, but eggs 
will also be deposited on birches and other forest trees.
There are varying degrees in the amount of red markings along the sides. 
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Smerinthus cerisyi 
WO, Cerisy's Sphinx:
Pale green, with granular skin, pale lateral diagonal lines, faint red 
spiracular circles, very pale longitudinal lines running from head to  more pronounced anal diagonal line.
Green heads bounded dorsally with  pale yellow inverted V.
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Smerinthus jamaicensis 
 WO, 
the Twin-spotted Sphinx:
Larvae feed upon many forest trees including birches and cherries, 
but are expecially fond of poplars and willows. Red markings on sides
vary greatly from specimen to specimen.
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Macroglossinae subfamily 
Dilophonotini tribe:
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Hemaris thysbe WO,  Hummingbird Clearwing:
There is also an orangey-pink prepupal form. The lateral line runs from S1 to the blue horn.
Hemaris thysbe larvae feed on viburnum and related plants. 
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Hemaris diffinis
 WO,
Snowberry Clearwing:
Snowberry (Symphoricarpos), 
honeysuckle (Lonicera), Coralberry, viburnums, Blue Dogbane 
(Apocynum), dwarf bush honeysuckle (Diervilla lonicera).
Black horn,  yellow base.
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Hemaris gracilis  WO, Slender Clearwing, Graceful Clearwing:
Distinguished from similar species by  pair of 
red-brown bands on undersides of thorax, which varies from 
green to yellow-green dorsally and sometimes brown with white 
underneath. Red abdomen/legs.
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 Philampelini tribe:
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Eumorpha achemon WO ??,  Achemon Sphinx:
 Grape (Vitis), Virginia Creeper 
(Parthenocissus quinquefolia), other vines, ivies 
(Ampelopsis). 
Larvae occur in both  light (green) form and  darker (tan/brown/reddish) 
forms. Note six "segmented" oblique lines. 4
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Eumorpha pandorus
WO,  Pandorus Sphinx:
If you have Grape or Virginia Creeper nearby, then you might encounter
this species. Note the five large white ovals (ovals can be orange on green forms). There are orangey-brown and green 
forms also.
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Macroglossini tribe:
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Amphion floridensis 
 WO,
 the Nessus Sphinix:
In additon to Virginia creeper larvae accept Grape (Vitis), 
ampelopsis (Ampelopsis), and cayenne pepper (Capsicum).
Larvae are green until the final instar.
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Darapsa choerilus 
 WO,
Azalea Sphinx:
Azalea, Viburnum; progress very rapidly. 
Larva to  left on Viburnum cassinoides is getting ready to 
pupate. Color change from green to light burgundy-brown indicates 
pupation is imminent.  
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Darapsa myron 
WO,
the Virginia Creeper Sphinx or the 
Grapevine Sphinx:
If you have the 
foodplants indicated in the common names, you probably have this 
species nearby. The lower wings are orange. 
Larvae feed on Virginia creeper (Parthenocissus quinquefolia), 
Grape (Vitis), Ampelopsis, and Viburnum.
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Darapsa versicolor 
WO, 
 Hydrangea Sphinx: 
Smooth hydrangea (Hydrangea arborescens), 
buttonbush (Cephalanthus occidentalis),  waterwillow 
(Decodon verticillatus). 
Note small head which can be retracted into the thorax.
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Deidamia inscriptum 
 WO, 
the Lettered Sphinx:
Grape (Vitis), ampelopsis (Ampelopsis), and 
Virginia creeper (Parthenocissus). 
Alternating yellow and greyish-green rings across the back 
distinguish this larva.
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Hyles gallii 
 WO, Bedstraw Hawk Moth, Gallium Sphinx:
Blackor brown forms; Epilobium (fireweed).
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Hyles gallii fifth instar, September 1, 2013, Jackie Kincaid
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Hyles lineata 
 WO, White-lined Sphinx:
Highly varied;  willow weed (Epilobium), four o'clock (Mirabilis), 
apple (Malus), evening primrose (Oenothera), elm 
(Ulmus), grape (Vitis), tomato (Lycopersicon), 
purslane (Portulaca), Fuschia.  Red/black swellings split by
dorso-lateral lines.
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Proserpinus flavosfasciata  WO, 
Yellow-banded Day Sphinx: Penultimate instar is pale green with  pair of pale, dorsolateral lines running from head to base of short caudal horn. 
Last instar is brown-black with numerous black dots; caudal horn replaced by a black button surrounded by whitish band edged with black.
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Sphecodina abbottii 
WO, 
Abbott's Sphinx:
Larvae feed at night on grape (Vitis) and ampelopsis 
(Ampelopsis) and hide on the bark of their host plants during 
the day.  Virginia creeper would also be a suitable host. There is also a dark form
without the green patches. Note the "raised eye", replacing the anal horn. 
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