Becker's White
Pontia beckerii (W.H. Edwards, 1871)
Family: Pieridae
Subfamily: Pierinae
Identification: Upperside of both male and female is white, with black spots near tip of forewing. Inside the forewing cell is a square black bar with a curved white center. The underside of the hindwing of both sexes has wide green edging along the veins, confined by a white median band.
Wing Span: 1 5/8 - 2 inches (4 - 5 cm).
Life History: Males patrol ravines in search of females. Females lay eggs singly on host stems, buds, leaves, flowers, and fruits.
Flight: Several flights from March-October.
Caterpillar Hosts: Plants of mustard (Brassicaceae) family including mustards (Brassica), and hedge mustard (Sisymbrium) species; and bladder-pod (Isomeris arborea) in the caper family (Capparidaceae).
Adult Food: Flower nectar including hedge mustard and alfalfa.
Habitat: Arid brushlands, desert foothills and canyons, fields.
Range: British Columbia and Alberta south to Baja California; east of the Cascades and Sierra Nevada, east and south to western Montana and New Mexico.
Conservation: Not required.
NCGR: G5 - Demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery.
Management Needs: None required.
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Verified Sightings
Displaying 97 - 120 of 498 verified sightings
Observation date: Sep 12, 2015
Submitted by: Chris Carvalho
Region: Harney County, Oregon, United States
Verified by: Ken Davenport
Verified date: Sep 22, 2015
Observation date: Jun 14, 2015
Submitted by: bobscafe
Region: British Columbia, Canada
Verified by: Norbert Kondla
Verified date: Aug 16, 2015
Observation date: Jul 05, 2015
Submitted by: Sue Orlowski
Region: Lincoln County, Washington, United States
Verified by: davidwdroppers
Verified date: Jul 11, 2015
Observation date: Jul 05, 2015
Submitted by: Sue Orlowski
Region: Lincoln County, Washington, United States
Verified by: davidwdroppers
Verified date: Jul 11, 2015
Observation date: Jul 05, 2015
Submitted by: Sue Orlowski
Region: Lincoln County, Washington, United States
Verified by: davidwdroppers
Verified date: Jul 11, 2015
Observation date: Apr 05, 2015
Submitted by: Nancy Asquith
Region: Clark County, Nevada, United States
Verified by: Ken Davenport
Verified date: Jun 25, 2015
Observation date: Apr 11, 2015
Submitted by: PDunwiddie
Region: Lincoln County, Washington, United States
Verified by: davidwdroppers
Verified date: Apr 17, 2015
Observation date: Mar 22, 2015
Submitted by: MAKI
Region: Ventura County, California, United States
Verified by: Ken Davenport
Verified date: Mar 22, 2015
Observation date: Aug 31, 2008
Submitted by: KellyBelle
Region: Boise County, Idaho, United States
Verified by: J_Martineau
Verified date: Mar 19, 2015
Observation date: Jul 15, 2014
Submitted by: carlysummer
Region: Gallatin County, Montana, United States
Verified by: J_Martineau
Verified date: Jul 29, 2014
Observation date: Jun 07, 2014
Submitted by: randimal
Region: Yakima County, Washington, United States
Verified by: davidwdroppers
Verified date: Jun 15, 2014
Observation date: Apr 30, 2014
Submitted by: Sue Orlowski
Region: Franklin County, Washington, United States
Verified by: davidwdroppers
Verified date: May 03, 2014
Observation date: Apr 02, 2014
Submitted by: Sue Orlowski
Region: Adams County, Washington, United States
Verified by: davidwdroppers
Verified date: Apr 04, 2014
Observation date: Aug 09, 2012
Submitted by: markgunn
Region: Park County, Wyoming, United States
Verified by: ron.royer
Verified date: Feb 19, 2014
Observation date: Jul 29, 2012
Submitted by: diwalks2@gmail.com
Region: San Diego County, California, United States
Verified by: Ken Davenport
Verified date: Dec 19, 2013
Observation date: Jul 29, 2012
Submitted by: Robert Gorman
Region: Orange County, California, United States
Verified by: Ken Davenport
Verified date: Nov 22, 2013
Observation date: Nov 01, 2013
Submitted by: treichard
Region: Riverside County, California, United States
Verified by: Ken Davenport
Verified date: Nov 11, 2013
Observation date: Jul 29, 2012
Submitted by: Robert Gorman
Region: San Diego County, California, United States
Verified by: Ken Davenport
Verified date: Nov 07, 2013
Observation date: Aug 17, 2013
Submitted by: Sue Orlowski
Region: Lincoln County, Washington, United States
Verified by: davidwdroppers
Verified date: Aug 21, 2013
Observation date: Aug 04, 2013
Submitted by: plex1ppus
Region: Lincoln County, Washington, United States
Verified by: davidwdroppers
Verified date: Aug 10, 2013
Observation date: Jun 23, 2013
Submitted by: Greg Dean
Region: British Columbia, Canada
Verified by: Norbert Kondla
Verified date: Aug 06, 2013
Observation date: Apr 13, 2013
Submitted by: PDunwiddie
Region: Grant County, Washington, United States
Verified by: davidwdroppers
Verified date: Apr 17, 2013
Observation date: May 06, 2012
Submitted by: J_Martineau
Region: Sheridan County, Wyoming, United States
Verified by: J_Martineau
Verified date: Feb 04, 2013
Observation date: Apr 19, 1986
Submitted by: legacy.reporter (William Swisher)
Region: Washoe County, Nevada, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Dec 01, 2012
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