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Digital Guide to Moth Identification

2270757802Sphinx chersis – Great Ash Sphinx Moth – (Hübner, 1823)

© Nolie Schneider
Distribution: Found across Canada from Nova Scotia to British Columbia and in most of the United States, but rare in the Gulf States.
Seasonality
and Size:
One generation in the north, two or more in the south. Wingspan 90 - 130 mm.
Larva and
Host Plants:
Larva feed on ash, lilac, privet and other plants in the olive family. The large (to 100 mm) greenish or pinkish larva has seven pairs of oblique lines on sides, each line continuing to preceding and following segments. Vertically elongate spiracles are black, bordered by white. An anal plate is flattened and edged with yellow.
Description/
Field Marks:
  • forewing gray with a series of 4 black dashes. The outermost dash reaches the tip of the wing.
  • hindwing black with 2 blurred pale grey bands.
  • central part of head and thorax gray.
Similar Species: In various parts of the west confusion might arise between this species and S. vashti, S. chersis and S. asella.
References
Data compiled and contributed by Nolie Schneider from references cited.

Sphinx chersis
© John Davis
Sphinx chersis
© D. Lynn Scott
Sphinx chersis
110mm – © Jim Vargo
Sphinx chersis
100mm – © Jim Vargo
Sphinx chersis
© Bev Wigney

Sphinx chersis
© Nolie Schneider

Sphinx chersis
© Canadian National Collection LG

Sphinx chersis
© Janice Stiefel
5th instar
Sphinx chersis
© Martha Reinhardt

Sphinx chersis
© Martha Reinhardt

Sphinx chersis
© Martha Reinhardt


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