The adult flight season of the variable checkerspot or Chalcedon checkerspot butterfly (Euphydryas chalcedona) has began in the chaparral & woodland ecosystems of Jasper Ridge! More about this species visit: https://stanford.io/3w2xMIw #nymphalidae #euphydryas #chalcedona #butterfly

The #stickymonkeyflower and the variable #checkerspot #butterfly (#Euphydryas #chalcedona) are at the center of one of the most significant research population biology findings by Dr. Irene Brown and other @stanfordjrbp scientists: https://t.co/ZevyXl2Klo Pics: @alicegcummings

#Flowers are tubular at the base with five broad lobes. Flowers can be white to red, most common color a light orange. They are honey plants #pollinated by #bees & #hummingbirds. Important host plant for the larvae of the variable #checkerspot #butterfly (#Euphydryas #chalcedona)

Day 14 of #JRBPvirtualtour! The variable #checkerspot or #Chalcedon #checkerspot (#Euphydryas #chalcedona) is a #butterfly in the family #Nymphalidae. The variable checkerspot is found across western #NorthAmerica, ranging from Alaska to #Mexico.