Status:  rare resident?

Flights:  1, Mar-May?


Distribution/known sites in Monterey County:  UC Hastings Reserve, no other recent records; Mar-Apr records from Pinnacles NM (San Benito Co.) suggest Gabilans uplands in early spring


Habitats:  dry rocky areas, open coniferous woodlands, chaparral

Host plants:  Possible hosts - rock cress, jewel flower, hedge mustard (Sisymbrium), other native mustards

Adult foodmud


Conservationnone required


Remarks: 

  1.   formerly California white

  2.   sisymbrii refers to preference for mustards as host plant (common among n. hemisphere whites)

  3.   prefers lowlands in spring, high elev. in summer; withstands wide range of temp.

  4.   males milk-white; females cream-colored, some tinged yellow (north)

 
 

Spring White   Pontia sisymbrii

Life history facts


egg: laid singly on any part of host plant

larva: young feed on leaves, older on flowers

pupa: hibernate

adult:  males patrol hilltops, ridges, bottoms of canyons for females; fly close to ground