The gypsy moth is a well-known pest of deciduous forests and landscape trees in northeastern United States. Most of the studies and available information on the feeding habits of larvae are therefore based on the flora of that region. However, as the gypsy moth, Lymantria dispar (L.), is introduced into new areas such as California, different plants become available as potential hosts (California Agriculture, March 1977, July 1982, and March-April 1984).

This is technical paper No. 8260, Agricultural Experiment Station, Oregon State University.