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Identification & Biology
Trees Gypsy Moths Like
How Gypsy Moths Harm Trees
Where Gypsy Moths Are
Gypsy Moth Management
History of Gypsy Moths
Asian vs. European Gypsy Moth
Identification And Biology Of The Gypsy Moth In Indiana

Pupae - Late June through July

Gypsy moth pupae. Female pupae are larger than male pupae.

Caterpillars stop feeding in June and enter the pupal stage - the resting stage between caterpillar and adult stages.
  • The pupal stage lasts from 10 - 14 days.

  • Gypsy moth pupae are covered with brown, tear-drop shaped protective shells about 1 to 2 inches long.

  • Pupae are covered with hairy bristles.

Caterpillars seek hidden spots in which to pupate for protection from predators and parasites.

pupae in tree bark

Pupae with hairy bristles in tree bark.
(John Obermeyer, Purdue University)

Pupae in corner of metal box

Pupae hidden in corner of a metal box.
(Vince Burkle, Indiana IDNR)


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