The Fir Tussock Moth (Hemerocampa Pseudotsugata McD.)

Author:
  • RBR. E. Balch
    R. E. Balch
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Abstract
Practically simultaneous outbreaks of the fir tussock moth (Hemerocampa Pseudotsugata McD.) have occurred in widely separate areas in the west during recent years. Considerable damage has been done in fir forests. A description is given of the different stages. Habits and life history are outlined. Host preferences varied in different areas. Economic importance and control are discussed briefly.