Oak-moth
Guides
Phryganidia
California Oak Moth
Phryganidia is a genus of prominent moths in the family Notodontidae, containing three species found in western North America. The genus is best known for Phryganidia californica, commonly called the California Oak Moth or California Oakworm, which undergoes periodic population outbreaks that can cause extensive defoliation of oak trees along the California coast. The genus was formerly placed in its own family, Dioptidae, but has been reclassified into Notodontidae. Adults are dull brown with weak flight, while larvae are specialized feeders on oak foliage.