Species Perigonica tertia - Hodges#10464

10464

described in 1903 by Dyar

one of 6 species in this genus in North America listed at All-Leps

wingspan about 38 mm, based on two photos by Tom Dimock at MPG

Adult: forewing light brownish-yellow to dull orangish with irregular basal, AM, PM, and subterminal lines; reniform and orbicular spots outlined with pale scales; dark dots along veins in subterminal area; outer margin falcate, with conspicuous point (and bend) occurring about half distance from apex to anal angle (a distinguishing feature); hindwing dirty white basally, shading to brownish-gray distally, with dark discal dot and pale fringe

California, Oregon, Washington; type specimen collected in California

oak woodlands in west coast states

adults fly from February to April in California

larvae feed on leaves of Oregon White Oak (Quercus garryana) and Tanoak (Lithocarpus densiflorus)

Perigonica angulata male antennae pectinations much shorter than in P. tertia, as shown in these photos by Tom Dimock at MPG; no info found on how/whether females of the two species are distinguishable

Perigonica pectinata forewing appears almost square-ended, with bend in outer margin occurring at least two-thirds distance from apex to anal angle (see photos by Tom Dimock at MPG, and by Bruce Walsh from Arizona)

P. fulminans and P. eldana are similar but probably don't occur north of California (compare photos of these and related species by various photographers at MPG)

pinned adult images of females by Tom Dimock (Moth Photographers Group)

larval foodplants plus habitat and differences from P. angulata (Jeff Miller, Macromoths of Northwest Forests and Woodlands, USGS)

presence in California; list of 11 specimen records with dates and locations (U. of California at Berkeley)

presence in Oregon; list citing 47 specimens in collection, including locally collected specimens (Oregon State U.)

author, date, and original genus (nearctica.com)

type specimen locality and literature references (Markku Savela, FUNET)