Malacosoma californicum
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Malacosoma californicum female with egg mass (click on image to enlarge it)
Author(s): Jerald E. Dewey, USDA Forest Service
Source: Wikimedia Commons
Author(s): Jerald E. Dewey, USDA Forest Service
Source: Wikimedia Commons
Malacosoma californicum Packard, 1864 - (western tent caterpillar)
The moth is native to western parts of North America and attacks various trees like apple, alder or Prunus. The caterpillars feed gregariously within a silken tent, but leave the tent as last instars. Females typically mate and lay eggs shortly after emergence from the pupae.
The populations go through periodic cycles, apparently regulated by the most import natural enemy, the Malacosoma californicum nucleopolyhedrovirus (MacaNPV).
| Vernacular names | |
|---|---|
| • English: | western tent caterpillar |
| • Français: | livrée de l’Ouest |
- Other images of Malacosoma californicum (Wikimedia Commons and IPM Images - click to enlarge)
Malacosoma californicum larvae with tent
larvae on tent
larvae
late instar larva
cocoon
adults mating
aerial view of outbreak in Colorado on Populus tremuloides
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