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.
Comments: NULL
Verified Sightings
Displaying 1 - 24 of 443 verified sightings
Observation date: Aug 25, 2019
Submitted by: satchmo0802
Region: Deschutes County, Oregon, United States
Verified by: Ken Davenport
Verified date: Sep 04, 2019
Observation date: Aug 21, 2019
Submitted by: cline_375
Region: Carbon County, Wyoming, United States
Verified by: J_Martineau
Verified date: Sep 03, 2019
Observation date: Jul 30, 2019
Submitted by: PDunwiddie
Region: Oregon, United States
Verified by: Ken Davenport
Verified date: Aug 15, 2019
Observation date: Aug 06, 2018
Submitted by: flyinganvil
Region: Siskiyou County, California, United States
Verified by: Ken Davenport
Verified date: Aug 07, 2019
Observation date: Jul 16, 2019
Submitted by: Jdammarell
Region: Lincoln County, Washington, United States
Verified by: davidwdroppers
Verified date: Jul 26, 2019
Observation date: Jul 04, 2019
Submitted by: papilio1
Region: Washoe County, Nevada, United States
Verified by: Ken Davenport
Verified date: Jul 13, 2019
Observation date: Jun 26, 2019
Submitted by: Diane R Halpin
Region: Teton County, Wyoming, United States
Verified by: J_Martineau
Verified date: Jul 11, 2019
Observation date: Jul 02, 2019
Submitted by: Lisahug
Region: Sierra County, California, United States
Verified by: Ken Davenport
Verified date: Jul 10, 2019
Observation date: May 30, 2019
Submitted by: Brush_lady
Region: Benton County, Washington, United States
Verified by: davidwdroppers
Verified date: May 31, 2019
Observation date: Apr 20, 2019
Submitted by: Thomas Road
Region: Grant County, Washington, United States
Verified by: davidwdroppers
Verified date: Apr 23, 2019
Observation date: Mar 03, 2019
Submitted by: MAKI
Region: San Bernardino County, California, United States
Verified by: Ken Davenport
Verified date: Mar 06, 2019
Observation date: Jan 29, 2015
Submitted by: Robert Gorman
Region: San Diego County, California, United States
Verified by: Ken Davenport
Verified date: Jan 25, 2019
Observation date: Jun 10, 2018
Submitted by: Paul Prappas
Region: British Columbia, Canada
Verified by: Norbert Kondla
Verified date: Nov 24, 2018
Observation date: Jul 03, 2018
Submitted by: Judeen
Region: Canyon County, Idaho, United States
Verified by: stevekohler
Verified date: Oct 03, 2018
Observation date: Jun 21, 2006
Submitted by: hydapse
Region: Montana, United States
Verified by: J_Martineau
Verified date: Aug 08, 2018
Observation date: Jul 30, 2018
Submitted by: Lisahug
Region: Lassen County, California, United States
Verified by: Ken Davenport
Verified date: Aug 05, 2018
Observation date: Jul 21, 2018
Submitted by: Brush_lady
Region: Umatilla County, Oregon, United States
Verified by: Ken Davenport
Verified date: Jul 22, 2018
Observation date: Jul 19, 2018
Submitted by: glennfine
Region: Siskiyou County, California, United States
Verified by: Ken Davenport
Verified date: Jul 19, 2018
Observation date: Jul 03, 2018
Submitted by: briahna
Region: Washoe County, Nevada, United States
Verified by: Ken Davenport
Verified date: Jul 03, 2018
Observation date: Jul 11, 2017
Submitted by: Wendy McCrady
Region: Custer County, Idaho, United States
Verified by: stevekohler
Verified date: Jun 19, 2018
Observation date: Jun 26, 2016
Submitted by: Kerry Turley
Region: Yakima County, Washington, United States
Verified by: davidwdroppers
Verified date: Jun 09, 2018
Observation date: May 13, 2018
Submitted by: J. Tiehm
Region: Modoc County, California, United States
Verified by: Ken Davenport
Verified date: May 20, 2018
Observation date: Mar 18, 2018
Submitted by: ncrosbyrd
Region: San Diego County, California, United States
Verified by: Ken Davenport
Verified date: Mar 29, 2018
Observation date: Jul 16, 2017
Submitted by: Robert Gorman
Region: San Diego County, California, United States
Verified by: Ken Davenport
Verified date: Jul 19, 2017
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