Williamson County, Tennessee
Sphingidae Larvae

Manduca sexta, heavily infested with braconid parasitoid, Brentwood, Williamson County, Tennessee,
September 13, 2009, courtesy of Cynthia McNutt.

This page is inspired by and dedicated to Cynthia McNutt who sent me the image (top of page) of a Manduca sexta caterpillar she found on her tomato plants in Brentwood, Williamson County, September 13, 2009.

Cynthia writes, September 13, 2009, " I live near Nashville Tennessee and have never seen such a caterpillar. Do you have any idea what species this is and what the white things are on its back? Is it harmful to my tomato plants? Would this be interesting for my daughter to watch turn into a moth or butterfly?"

It is a heavily parasitoidized Manduca sexta (Carolina Sphinx) caterpillar (red anal horn). The dark spots on the caterpillar are the exit wounds as tiny internal parasitoid larvae (probably Cotesia congregata) ate their way out. The white fuzzy protrusions are the parasitoid cocoons. The caterpillar will never become a moth. It is a bug eat bug world out there.

"If you encounter a non-infested Sphinx larva, it would be possible to get it to pupate and then see the emergent moth. I would like permission to post one or more of your photos, credited to you on a thumbnail checklist page I will create for Williamson County, featuring Sphingidae larvae??

The page would feature an article about how to successfully rear found larvae. By coincidence another person from nearby Davidson County, sent me images of five different adult sphinx moths she encountered this year and the last one was a Manduca sexta moth.

"Only a small percentage of the 300 or so eggs that a female moth lays ever make it to adulthood; otherwise we would soon be overrun with moths.

"These larvae can make a mess of a tomato plant. Usually they go unnoticed when small, but once they reach final instar, they can eat much foliage and even green tomatoes in a short time. Check your tomato plants regularly. Sometimes the small brown frass pellets (poop) are easier to spot on the ground, or on a white sheet especially placed for that purpose, than are the green larvae on the undersides of the foliage. If you spot frass, turn leaves directly above over until you spot the larvae and treat them appropriately. A close rleative, Manduca quinquemaculatus (black anal horn) also feeds on tomato plants."

For care of "found larvae/caterpillars and or pupae" visit Manduca sexta larva, central Texas, August 21, 2008, Trina Woodall.

Thirty-four Sphingidae species are listed for Tennessee on the U.S.G.S. website. Not all of the species are reported or anticipated in Williamson County (None are reported on U.S.G.S. as of September 2009). It is hoped that this checklist, with the thumbnails and notes, will help you quickly identify the caterpillars (larvae) you are likely to encounter.

A "WO" after the species name indicates that I have no confirmed reports of this species in Williamson County, but I (William Oehlke) expect that this moth is present or might be present.

A "USGS" indicates the moth is reported on the USGS website and/or in Lepidoptera of North America, #1. Distribution of Silkmoths (Saturniidae) and Hawkmoths (Sphingidae) of Eastern North America, an excellent little booklet available through Paul Opler.

Please help me develop this list with improved, documented accuracy by sending sightings (species, date, location), preferably with an electronic image, via email to Bill Oehlke.

Sphinginae subfamily Sphingini tribe: Agrius cingulata, WO Pink-spotted hawkmoth, Larvae feed on plants in the Convolvulaceae family, especially Ipomoea batatas (sweet potato) and in the Solanaceae family, especially (Datura) (jimsonweed) and related plants in the Americas. There is also a brown form. Look for very large, dark spiracular circles. Ceratomia amyntor WO, the Elm Sphinx or Four-horned Sphinx Larvae feed on Elm (Ulmus), birch (Betula), basswood (Tilia), and cherry (Prunus). There are both green and brown forms. The four horns near the head are diagnostic. Ceratomia catalpae WO, the Catalpa Sphinx Young caterpillars feed gregariously on Catalpa species (Catalpa bignoniodes and C. speciosa) in the Bignoniaceae family, skeletonizing the foliage. Larvae are mostly white in early instars. Ceratomia hageni WO, Hagen's Sphinx or Osage Orange Sphinx Larvae feed on osage orange (Maclura pomifera), and they have a granulous appearance with variable amounts of purple along the oblique white stripes. Ceratomia undulosa WO, the Waved Sphinx Fraxinus, Ligustrum, Quercus, Crataegus and Chionanthus virginicus are listed as hosts. In the fifth instar, the spiracular ovals are decidedly red and the anal horn is off-white to pinkish laterally. Dolba hyloeus WO, the Pawpaw Sphinx Larvae feed on pawpaw (Asimina triloba), littleleaf sweetfern (Myrica aspleniifolia), possum haw (Ilex decidua), and inkberry (Ilex glabra) as well as Tall Gallberry Holly (Ilex coriacea). Louis Handfield reports larvae probably feed on Ilex verticellata in Quebec. Lapara coniferarum WO, the Southern Pine Sphinx Larvae feed upon various pine species, including loblolly pine (Pinus taeda) and longleaf pine (P. pinaster). They are well camouflaged and are without an anal horn. Lintneria eremitus WO, the Hermit Sphinx. Larval hosts are various species of beebalm (Monarda fistulosa), mints (Mentha), bugleweed (Lycopis), and sage (Salvia). Joe Garris of Sussex, New Jersey, reports larvae also feed on Collinsonia canadensis (Canada Horsebalm, Richweed, Hardhack, Heal-All, Horseweed), and on the houseplant, Coleus. Manduca jasminearum WO, the Ash Sphinx Larvae feed on ash in the Fraxinus genus. Syringa (lilac) and Ulmus (elm) have also been reported. Manduca quinquemaculatus WO, the Five-spotted Hawkmoth The caterpillars are called Tomato Hornworms and each has a black horn at the end of the abdomen. Larvae feed on potato, tobacco, tomato, and other plants in the nightshade family (Solanaceae). Manduca rustica WO, the Rustic Sphinx The caterpillar has numerous white nodules on top of the thorax and seven pairs of oblique, blue-gray stripes along the side of the body. The horn is white at the base and blue-gray at the tip. Many hosts are utilized. Manduca sexta CM, the Carolina Sphinx Tobacco Hornworms, equipped with a red-tipped horn at the end of the abdomen, are true gluttons and feed on tobacco and tomato, and occasionally potato and pepper crops and other plants in the nightshade family (Solanaceae). Manduca sexta larva, feeding on tomato foliage, Brentwood, September 13, 2009, Cynthia McNutt. Paratrea plebeja WO, the Plebeian Sphinx Preferred hosts are common trumpetcreeper (Campsis radicans), Florida yellow-trumpet (Tecoma stans), lilac (Syringa species), and passionflower (Passiflora species). The anal horn is blue, preceded by a yellow dash. Sphinx canadensis WO, Sphinx canadensis, the Canadian Sphinx, is not common, and is not often reported anywhere, but it should be present in Eau Claire County. Larval hosts are white ash (Fraxinus americana) and blueberry (Vaccinium). Sphinx chersis WO, the Northern Ash Sphinx or Great Ash Sphinx: The larvae are pale bluish green. The head has a pair of yellow lateral bands meeting at the apex. The oblique, lateral stripes are pale and bordered anteriorly with a darker green. Larval hosts are ash, lilac, privet, cherry, and quaking aspen. Sphinx drupiferarum WO, the Wild Cherry Sphinx Sphinx drupiferarum larvae hide in the day and feed primarily on cherry, plum, and apple at night. Larvae have been found on Amelanchier nantuckensis in Massachusetts and have been reared to pupation in Michigan on Prunus serotina from eggs readily deposited by a female. Sphinx franckii WO, Franck's Sphinx Moth Larvae feed exclusively on various species of ash (Fraxinus). Raised, pointed bumps, especially near the head and thorax give this caterpillar a reptilian appearance. Sphinx gordius WO, the Apple Sphinx Larval hosts are apple (Malus), sweetfern (Myrica), Carolina rose (Rosa carolina), blueberry and huckleberry (Vaccinium), white spruce (Picea glauca), American larch (Larix laricina), and alder (Alnus). Sphinx kalmiae WO, the Laurel Sphinx Laurel Sphinx larvae feed primarily on lilac and fringe. Larvae have also been found on privet. Smerinthini Tribe: 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). Pachysphinx modesta WO, the Modest Sphinx or Poplar Sphinx Larvae feed on poplars and cottonwood. Anal horn all but disappears in final instar. Paonias astylus WOfont>, the Huckleberry Sphinx It would be more common in southern Massachusetts and is a relatively uncommon species. Only rarely are they seen in Maine. I never saw one in New Jersey. 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. Paonias myops WO, the Small-eyed Sphinx The larvae depicted is probably third instar. There may be more red spotting on the sides as larvae mature. 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. Macroglossinae subfamily Dilophonotini tribe: See Hemaris comparison to help distinguish the next two species. Hemaris thysbe WO, the 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. Hemaris diffinis WO, the Snowberry Clearwing or Bumblebee Moth Larval host plants include Snowberry (Symphoricarpos), honeysuckle (Lonicera), Coralberry, viburnums, Blue Dogbane (Apocynum) and dwarf bush honeysuckle (Diervilla lonicera). Horn is black with a yellow base. Philampelini tribe: Eumorpha achemon WO, the Achemon Sphinx Larvae feed upon Grape (Vitis), Virginia Creeper (Parthenocissus quinquefolia) and other vines and ivies (Ampelopsis). Larvae occur in both a light (green) form and a darker (tan/brown) form. Note six "segmented" oblique lines. Eumorpha pandorus WO, the Pandorus Sphinx If you have Grape or Virginia Creeper nearby, then you might encounter this species. Note the five large white ovals. There are orangey-brown and green forms also. Macroglossini tribe: 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. Darapsa choerilus WO, the Azalea Sphinx Larvae feed on Azalea and Viburnum and progress very rapidly. The larva to the left on Viburnum cassinoides is getting ready to pupate. Color change from green to light burgundy-brown indicates pupation is imminent. 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. Darapsa versicolor WO, the Hydrangea Sphinx Larvae turn a deep chocolate brown just prior to pupation, and the "horn" on the tail also turns downward as pupation draws near. Darapsa versicolor larvae feed on Smooth hydrangea (Hydrangea arborescens), buttonbush (Cephalanthus occidentalis), and waterwillow (Decodon verticillatus). Deidamia inscriptum WO, the Lettered Sphinx Grape (Vitis), ampelopsis (Ampelopsis), and Virginia creeper (Parthenocissus) all serve as larval hosts. The alternating yellow and greyish-green rings across the back distinguish this larva. Hyles lineata WO, the White-lined Sphinx Larvae are highly varied and feed on a great diversity of plants including willow weed (Epilobium), four o'clock (Mirabilis), apple (Malus), evening primrose (Oenothera), elm (Ulmus), grape (Vitis), tomato (Lycopersicon), purslane (Portulaca), and Fuschia. All larvae seem, however, to have the red/black swellings split by dorso-lateral lines. Sphecodina abbottii WO, the 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. Xylophanes tersa WO, the Tersa Sphinx Larvae also feed on Borreria, Catalpa and Manettia spp. and Smooth buttonplant (Spermacoce glabra) and starclusters (Pentas species). They are also recorded on joe-pie weed and Hamelia patens and on Hedoydis nigricans. The green form may be more common.

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.

Eggs of many North American species are offered during the spring and summer. Occasionally summer Actias luna and summer Antheraea polyphemus cocoons are available. Shipping to US destinations is done from with in the US.

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