Lots of Furry Moths

Observation: This spring we had lots of brown furry moths, do these grow spikes before they cocoon?

LEO Says: We have forwarded this to some LEO Network consultants for identification and to answer the question about the cocoon. We don't have any other moths like this one in our catalog currently. For more information on identification of moths in Alaska, you can see: Insect Identification for the Common Observer