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Citheronia regalis, the regal moth or royal walnut moth, is a North American moth in the family Saturniidae. The caterpillars are called hickory horned devils. The adult has a wingspan of 3.75–6.1 in (9.5–15.5 cm). The species was first described by Johan Christian Fabricius in 1793.
The larva at the onset is small with a yellow body. In the initial stages of their life, they are solitary feeders, eating primarily at night. During the day, they mostly remain curled up like a j-pattern, closely resembling a bird’s dropping.
Typically, C. regalis is a midsummer moth, on wing from late June through August with larvae peaking August through October. There is a distinct bell curve to the emergence, with peak weeks coinciding with the first spell of the humid summer weather which may synchronize emergences.
The cecropia moth (Hyalophora cecropia) is the largest moth native to North America, attaining a wingspread of about 15 cm (6 inches). It is brown with white, red, and gray markings and large, distinctive, crescent-shaped eye spots. The larva grows to 10 cm (4 inches) in length.
Larva: The hickory horned devil is among the largest of our native saturniid caterpillars. It is 12.5 to 14 cm in length - about the size of a large hot dog. The caterpillars vary slightly in color, but are commonly blue-green.
26 paź 2024 · Although it has a ferocious appearance, the hickory horned devil is harmless. This worm starts as a tiny caterpillar after hatching from one of hundreds of eggs laid by a regal moth. Over a matter of weeks, it grows and molts until it reaches its amazing mature size (almost 6 inches!).
27 sie 2019 · Larva: body varies slightly in color, but is commonly blue-green; second and third thoracic segments each bear two long and two shorter orange "horns" with black tips; abdominal segments each have four short, black "horns", and segments 2 to 8 have a pale, oblique lateral stripe.
