|Great Ash Sphinx|
|Sphinx chersis, adult|
The Great Ash Sphinx or Northern Ash Sphinx (Sphinx chersis) is a moth that belongs to the family Sphingidae.
This insect has a large wing span (90 to 130 mm). The upperside of the forewing is soft dark-gray to blue-gray with a series of black dashes, one of which reaches the wing tip. The upperside of the hindwing is black with blurry pale gray bands. The larva of this species is typically light green with blue dashes and a bluish-green horn, but there is a red morph as well. Its appearance is very similar to that of others in the subfamily Sphinginae.
Its larvae feed upon various plants in the Olive family (Oleaceae) such as lilacs (Syringa spp.), ashes (Fraxinus spp.), and privet (Ligustrum vulgare). Mature caterpillars pupate in subterranean chambers when they have finished feeding, and here the pupae stay dormant until the next year. The moth emerges any time from May to August in the South, but is only found from June to July farther north. Adults feed at dusk on deep-throated flowers and have been sighted at honeysuckles (Lonicera spp.), evening primroses (in the family Onagraceae), dogbane (Apocynum spp.), phlox (Phlox spp.), and bouncing bet (Saponaria officinalis).
- Sphinx chersis chersis (from Mexico north through most of the United States)
- Sphinx chersis mexicanus Rothschild & Jordan, 1903 (Mexico)
- "CATE Creating a Taxonomic eScience - Sphingidae". Cate-sphingidae.org. Retrieved 2011-11-01.
- Great Ash Sphinx Moths of North America Guide
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