Status:  uncommon resident

Flights:  1-2?, Mar-Aug?

Distribution/known sites in Monterey County:  local, foothills to mid-elevation?; Big Creek Reserve, Hastings Reserve, Parkfield/Bradley area roadsides 

Habitats:  open shrubby areas, forest edges

Host plants: legume flowers and young seeds, esp. vetches

Adult foodflower nectar

Conservation: not required


  1.   while drinking, twitches HW & tails, possible predator distraction

  2.   male blue above; fem. brown, some basal blue


Western tailed-blue Everes amyntula

Life history facts

egg: laid on flowers or young seed pods

larva: eat young seeds inside the pod

pupa: overwinters inside pod

adult:  males patrol and perch during day

nectaring on amsinckia