Caterpillar Hosts: All spruce species including blue spruce, Picea pungens Engelm.
Range: Across southern Canada and from Colorado east through much of the northeastern United States.
Comments: Considered a pest of blue spruce.
We depend on donations to keep Butterflies and Moths of North America freely available. We want to express our gratitude to all who showed their support by making a contribution this year. You can donate to support this project at any time.