The
spiny elm caterpillar is the larva of the mourning cloak butterfly.
The caterpillars are nomadic foragers on a number of host trees but prefer
elm and willow. The social behavior of the caterpillar
is unstudied.
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The Spiny
Elm Caterpillar (Nymphalis antiopa)
(Nymphalidae)
The
spiny elm caterpillar is the larva of the mourning cloak butterfly.
The caterpillars are nomadic foragers on a number of host trees but prefer
elm and willow. The social behavior of the caterpillar
is unstudied.