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Phryganidia californica

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Title: Phryganidia californica  
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Subject: Quercus agrifolia, Notodontidae, List of Lepidoptera that feed on oaks
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Phryganidia californica

Phryganidia californica
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Family: Notodontidae
Genus: Phryganidia
Species: P. californica
Binomial name
Phryganidia californica
Packard, 1864

The California Oakworm or California Oak Moth (Phryganidia californica) is a moth of the Notodontidae family. It is found along the coasts of California and Oregon.

The wingspan is about 30 mm. They are tan to gray moths with prominent wing veins. Adults are on wing from March to November. There are two generations per year in northern California. Sometimes there is a third generation in southern California.

The larvae feed on the leaves of oak, especially Quercus agrifolia. Young larvae feed between veins on the lower leaf surface. Although the upper leaf surface is left intact, it dries out and turns brown. Larvae in later instars chew completely through the leaf blade, often leaving only major leaf veins. Small frass pellets drop from the canopy as larvae feed. In outbreak years, individual trees or groups of trees may be almost entirely defoliated, typically by late summer or early fall. The larvae are black with lengthwise yellow stripes. Full-grown larvae are about 30 mm long. Pupation takes place in a white or yellow pupa with black markings.

Life stages

External links

  • Bug Guide
  • Images
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