Status:    uncommon resident

Flights:  1, Mar-Jun

Distribution/known sites in Monterey County:  interior foothills and mountains; Hasting’s reserve, Arroyo Seco, Chalone Pks., Parkfield

Habitats:  sea level to treeline, diverse habitats - chaparral, meadows, open woods

Host plants:  owl’s clover, indian warrior, indian paintbrush, pentstemon, chinese houses

Adult foodflower nectar

Conservation: secure globally, except some ssp.; Bay checkerspot E. e. bayensis, and Quino checkerspot E. e. quino are endangered


  1.   difficult to separate from variable checkerspot

  2.   along Pacific coast, redder overall than E. chalcedona

  3.   occasionally found on serpentine soils in coastal CA

  4.   up to 21 ssp., well studied: Paul Ehrlich, population studies

  5.   always lacks white off-center abdominal spots found on    checkerspot, and often has black on lower half of antennal club


Edith’s checkerspot Euphydryas editha

Life history facts

egg: laid in large groups on underside of host plant leaves or flowers

larva: eat leaves and flowers, sometimes use different host plants before and after hibernation; young live in loose silk webs, 3rd and 4th stages hibernate


adult:  perch or patrol all day to locate fem., hilltop in some areas

nectaring on buckwheat

n. Chalone peak