This Caterpillar initially is brown. Its head has 3 short horns with red tips. The caterpillar only has 2 pairs of prolegs, one pair on each of the last two abdominal segments. The caterpillar feeds at night, and rests by day on its prolegs, looking like a straight twig.

(Photo: copyright Cathy Young)

Later instars are green, but still have red-tipped horns on the head.

pupa magnified
(Photo: copyright Cathy Young)

The pupa is long and thin, and brown.

(Photo: copyright Cathy Young)

The adult moth has green forewings and white hindwings.

eggs magnified
(Photo: copyright Cathy Young)

The eggs are yellow squashed ovals.

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(updated 20 July 2010)