Callosamia promethea

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Promethea Silkmoth
Callosamia promethea 0385.jpg
Male Promethea Moth, Megan McCarty79.jpg
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Family: Saturniidae
Tribe: Attacini
Genus: Callosamia
Species: C. promethea
Binomial name
Callosamia promethea
Drury, 1773

The Promethea Silkmoth (Callosamia promethea), is a member of the Saturniidae family of moths.


Males have dark brownish-black wings with a faint white postmedian line and pinkish coloring near the apical spot. Females are bright reddish-pink or a brownish color with well-developed reniform spots. Both sexes have tannish marginal borders. Their wingspan measures 7.5-9.5 cm.


C. promethea is found in the eastern half of the United States and lower parts of eastern Canada.

Life cycle[edit]

Mating takes place in the afternoon to early evening, and egg-laying begins at night. Females are attracted to lights, but males are not. Females lay 2-12 eggs in a single cluster on host plants. The early instar larvae feed together on the underside of leaves. They are greenish-yellow and striped with black. The older larvae are solitary and are green with 4 red knobs above the thorax and 1 yellow knob on the eighth abdominal segment. On the lower branches of the food plant, the larva makes a cocoon within a leaf, firmly attaching the petiole to the branch. C. promethea has 1 brood in the north (which flies from June–July) and 2 or more broods in the south (which fly from March–May and from July–August).

Food Plants[edit]

The larvae of C. promethea feed on a variety of plants including- but not restricted to- the following:



  • David L. Wagner 2005. Caterpillars of Eastern North America. Princeton University Press, Princeton, New Jersey. ISBN 0-691-12143-5
  • Charles V. Covell, Jr. 2005. Moths of Eastern North America. Virginia Museum of Natural History, Martinsville, Virginia. ISBN 1-884549-21-7

External links[edit]