Superfamily: Bombycoidea, Latreille, 1802
Yellowish eggs (2mm) are deposited
or in groups of up to four on upper and under surfaces of hostplant foliage.
Larvae (full grown at 15 cm long) are
solitary nighttime feeders in early stages when they curl up in a "j" shaped pattern during the
day and resemble two-toned bird
droppings on upper leaf surfaces.
In later instars Citheronia regalis larvae also feed during the day and grow very rapidly
with very efficient assimilation of host plants, especially Rhus.
It is easy to see how the moth came to be known as the Hickory Horned Devil
from the menacing display of non-urticating, generally harmless, body spines.
My father has had
regalis pupate regularly in the dark chambers of a closed fishing tackle box. I regularly have
Sphingidae pupate under paper towelling in large buckets placed
in a warm dark closet.