The genus Malacosoma represents the tent caterpillars. The adult's forewing is 11- to 16-mm long. Adult moths of this genus are nocturnal and are easily attracted to light. The caterpillars are often gregarious and their silk tents are commonly seen in the Greater Yellowstone Ecosystem (see below). They are also often parasitized by numerous wasps and flies in all life stages except the adult moth.
Species: Malacosoma sp.
Photograph: © 2008 RKD Peterson
Date of Photograph: 23 July 2008
Location: Montana, Gallatin Co. (45o26'55" N 111o14'05" W)
Caterpillars, Malacosoma sp. © 2008 RKD Peterson