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Digital Guide to Moth Identification

2267007787Ceratomia undulosa – Waved Sphinx Moth – (Walker, 1856)

© Mark Dreiling - DNA
Distribution: Prince Edward Island to Alberta, North Dakota and Colorado, southward to Florida and western Texas.
and Size:
Two broods in the south from March to October, one brood in the north from May to August. Glaser reports this moth as common throughout Maryland between 28 April and 8 September. Wingspan 78 - 110 mm.
Larva and
Host Plants:
Light green hornworm, red/brown forms may be encountered: the horn may be pink. Seven pairs of oblique lateral stripes, and a broad stripe on the head from eyes to crown. Convex anal plate and anal prolegs with raised black spots Spiracles have a white center, edged with orange. Ash is the preferred food plant, but lilac, privet and fringe-tree may also be eaten.
Field Marks:
  • forewing usually pale brownish gray. Some individuals, particularly from the northern Great Plains, may be very dark, and others may be pale yellowish brown.
  • jagged black lines and black dashes on forewings well defined.
  • reniform spot large, white with black outline.
  • hindwing gray with diffuse darker gray lines.
Similar Species: See discussion under 7786 - Elm Sphinx, C. amyntor.
Data compiled and contributed by Nolie Schneider from references cited.

Ceratomia undulosa
© Machele White
Ceratomia undulosa
© John Himmelman
Ceratomia undulosa
© Nolie Schneider
Ceratomia undulosa
©Ken Childs
Ceratomia undulosa
85mm – © Jim Vargo
Ceratomia undulosa
© Canadian National Collection LG

Ceratomia undulosa
© Bev Wigney

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