Rusty Tussock Moth Caterpillar

Observation: My brother Olaf and his wife Joni O'Domin have seen what they think is a "different" caterpillar in the tundra and on the salmonberry bushes and are wondering what type it is since they have not noticed it around the community before. The concern is that the caterpillars might be a problem for local trees, berry bushes and other plants. Oxcenia O'Domin

Cooperative Extension Service Consult: Integrated Pest Management Program manager, Corlene Rose writes, "The photo appears to be a rusty tussock moth caterpillar. (There are also several, similar tussock moths).This is a common forest insect throughout much of the state and is known to be having an outbreak, this year, on many native plants including berries. I'm not surprised to see it in the King Salmon area. Yes, it is a good looking caterpillar and the adult is a rusty colored moth. (Good job to the photographer for capturing the image nicely and in focus.) Here's a link to a photo of the male moth: it says "Caterpillars of this species feed on a wide range of woody plants, and can do considerable damage. We know that the pictured rusty tussock moth is a male, because the females are about six times larger and virtually wingless. They remain with the cocoon after they emerge, and use pheromones to attract the males. They lay eggs on the cocoon. Eggs overwinter."