Status:  uncommon local resident

Flights:  1, May-late Aug


Distribution/known sites in Monterey County:  limited to coastal range uplands; Chew’s Ridge and Skinner Ridge


Habitats:  high mtn. meadows, slopes

Host plants: violets, incl. viola quercetorum

Adult foodCA buckeye, thistle


Conservation: ssp. atossa (Kern Co) extinct; other races very restricted range, S. a. clemencei only in coast ranges MCO and SLOCO


Remarks: 

  1.   MCO race ‘clemence’s” fritillary S. a. clemencei lighter, approaching tawny

  2.   Santa Cruz CO race S. a. adiaste

  3.   fem. larger, paler; male with thickened black FW veins slightly more pronounced; MCO race: fem. pale-orange to buff above

 
 

Unsilvered fritillary Speyeria adiaste

Life history facts


egg: laid singly on fallen leaves and twigs near violets

larva: first stage hibernates unfed, feeds on violet leaves in spring

pupa:

adult: 

mudding