Gypsy moth caterpillars collected during an outbreak. (Jodie Ellis, Purdue University)

Gypsy moth caterpillars collected during an outbreak. (Jodie Ellis, Purdue University)

Gypsy moth caterpillars collected during an outbreak. (Jodie Ellis, Purdue University)

Gypsy moth caterpillars collected during an outbreak. (Jodie Ellis, Purdue University)

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