Malacosoma constricta, also known as the Pacific tent caterpillar, is a species of moth endemic to North America.

[1][2] Malacosoma constricta is known from California, Oregon, and Washington and is reported only on oaks.

The larvae feed in groups outside the tent, entering it only to molt.

Eggs, laid along sticks in clumps, are golden yellow.

[2] According to the U.S. Forest Service, "Other than obvious aesthetic impacts, tent caterpillars typically do not cause major damage on California oaks.