Species Details

Ceratomia amyntor

University of Alberta E.H. Strickland Entomological Museum Read more about this collection »

Common NameElm Sphinx IdentificationA very large (8.5-11.5 cm wingspan) long-winged moth. The body is brown edged with longitudinal black stripes. The doubled postmedian line on both wings is the only well developed cross line. There are also a number of black longitudinal streaks on the outer half of the forewing and small, light discal spots. Our other large dark sphinx moths from south of the boreal forest are grey, not brown. The adults are similar, but females are larger than males. The larvae are large, pale green with granular skin and pale diagonal lateral streaks. They are easily identified by the four prominent horns on the front end, hence the other common name, the Four-horned sphinx.

Scientific Name Ceratomia amyntor Common Name Elm Sphinx Habitat Frequents hardwood woodland. Identification
A very large (8.5-11.5 cm wingspan) long-winged moth. The body is brown edged with longitudinal black stripes. The doubled postmedian line on both wings is the only well developed cross line. There are also a number…
A very large (8.5-11.5 cm wingspan) long-winged moth. The body is brown edged with longitudinal black stripes. The doubled postmedian line on both wings is the only well developed cross line. There are also a number of black longitudinal streaks on the outer half of the forewing and small, light discal spots. Our other large dark sphinx moths from south of the boreal forest are grey, not brown. The adults are similar, but females are larger than males. The larvae are large, pale green with granular skin and pale diagonal lateral streaks. They are easily identified by the four prominent horns on the front end, hence the other common name, the Four-horned sphinx.
Life History
The adults are nocturnal and come to light. There is a single annual brood, which overwinter as pupae. Mature larvae are most often encountered after they wander from the host tree and seek a place with loose soil in…
The adults are nocturnal and come to light. There is a single annual brood, which overwinter as pupae. Mature larvae are most often encountered after they wander from the host tree and seek a place with loose soil in which to pupate. The only Alberta record is for June 3, 2004.
Diet Info Larvae are reported to feed on elm, birch, basswood and cherry. Range Nova Scotia west to the eastern edge of Alberta, south to Florida and Mexico. There is a single Alberta record for a fresh female collected at MV light on the edge of the Red Deer River north of Jenner. Notes
This eastern species reaches the western limit of its range in southeastern Alberta. The presence of the very fresh female collected near Jenner (illustrated above) suggests that this was not a long-distance immigrant…
This eastern species reaches the western limit of its range in southeastern Alberta. The presence of the very fresh female collected near Jenner (illustrated above) suggests that this was not a long-distance immigrant but part of a resident Alberta population. The larvae was photographed in central SK.
Ceratomia amyntor
Ceratomia amyntor

Citation

Page Citation for Ceratomia amyntor

Page Citation

"Ceratomia amyntor, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-6157. Accessed 29 Nov. 2021.

Taxonomic Hierarchy

Kingdom Animalia Phylum Arthropoda Class Hexapoda Subclass Insecta Order Lepidoptera Suborder Ditrysia Superfamily Sphingoidea Family Sphingidae Genus Ceratomia Species Ceratomia amyntor
This hierarchy is created from our museum records, it may not always accurately reflect modern taxonomies.

Taxonomic Hierarchy for University of Alberta E.H. Strickland Entomological Museum