Harford's Sulphur
Colias harfordii Hy. Edwards, 1877
Family: Pieridae
Subfamily: Coliadinae
Identification: Upper surface of male a rich yellow, wing bases not darkened. Cell spot in front wing is medium-sized and black, often with a white center. Forewing border wide, hindwing border narrower. Cell spot in hindwing not noticeable. Female resembles male but border less well-defined, in some cases reduced or lacking.
Wing Span: 1 3/4 - 2 inches (4.4 - 5.1 cm).
Life History: Males patrol open areas to find receptive females. Eggs are laid singly on the underside of host plant leaves; caterpillars eat leaves. Larvae hibernate.
Flight: Two flights from February-May and from June-August.
Caterpillar Hosts: Rattleweed (Astragalus douglasii) in the pea family (Fabaceae).
Adult Food: Flower nectar from thistles and mints.
Habitat: Open chaparral and woodland clearings.
Range: Southern California coastal ranges and canyons from Kern County south to San Diego County.
Conservation: Not usually required.
NCGR: G5 - Demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery.
Management Needs: Not reported.
Comments: NULL
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Verified Sightings
Displaying 25 - 48 of 139 verified sightings
Observation date: May 07, 2011
Submitted by: Ken Davenport (Ken Davenport)
Region: Monterey County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: May 01, 2011
Observation date: Jun 27, 1966
Submitted by: legacy.reporter (unknown)
Region: San Diego County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: May 01, 2011
Observation date: Sep 28, 2011
Submitted by: Ken Davenport (Ken Davenport)
Region: Kern County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: May 01, 2011
Observation date: May 25, 2005
Submitted by: legacy.reporter (William Bouton)
Region: Ventura County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: May 01, 2011
Observation date: Apr 11, 2011
Submitted by: Ken Davenport (Ken Davenport)
Region: Kern County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: May 01, 2011
Observation date: Jun 14, 1979
Submitted by: legacy.reporter (unknown)
Region: Kern County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: May 01, 2011
Observation date: Jul 29, 2011
Submitted by: legacy.reporter (Jon Kegley)
Region: Monterey County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: May 01, 2011
Observation date: Jul 31, 2011
Submitted by: legacy.reporter (Paul Johnson)
Region: Fresno County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: May 01, 2011
Observation date: Jun 28, 1986
Submitted by: Norbert Kondla
Region: Kern County, California, United States
Verified by: Norbert Kondla
Verified date: Feb 09, 2011
Observation date: Apr 08, 2010
Submitted by: legacy.reporter (Jim Brock)
Region: Ventura County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Dec 31, 2010
Observation date: Mar 16, 2010
Submitted by: legacy.reporter (Tom Dimock)
Region: Ventura County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Dec 31, 2010
Observation date: Apr 08, 2010
Submitted by: legacy.reporter (Jim Brock)
Region: Ventura County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Dec 31, 2010
Observation date: Mar 16, 2010
Submitted by: legacy.reporter (Tom Dimock)
Region: Ventura County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Dec 31, 2010
Observation date: Mar 16, 2010
Submitted by: legacy.reporter (Tom Dimock)
Region: Ventura County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Dec 31, 2010
Observation date: Apr 08, 2010
Submitted by: legacy.reporter (Jim Brock)
Region: Ventura County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Dec 31, 2010
Observation date: unknown
Submitted by: BAMONA
Region:
Verified by: BAMONA
Verified date: Sep 06, 2010
Observation date: Oct 27, 1990
Submitted by: legacy.reporter (`John F. Emmel)
Region: Riverside County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Aug 02, 2010
Observation date: Oct 22, 1983
Submitted by: legacy.reporter (Ron H. Leuschener)
Region: Riverside County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Apr 02, 2010
Observation date: Oct 23, 1983
Submitted by: legacy.reporter (Ron H. Leuschener)
Region: Riverside County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Apr 02, 2010
Observation date: Oct 09, 1981
Submitted by: Ken Davenport (Ken Davenport)
Region: Ventura County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Mar 09, 2010
Observation date: Feb 03, 1977
Submitted by: legacy.reporter (John F. Emmel)
Region: Riverside County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Jan 07, 2010
Observation date: Feb 17, 1977
Submitted by: legacy.reporter (Bruce O'Hara)
Region: San Diego County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Jan 07, 2010
Observation date: Nov 17, 1977
Submitted by: legacy.reporter (John F. Emmel)
Region: Riverside County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Jan 07, 2010
Observation date: Jun 19, 1998
Submitted by: legacy.reporter (Jeffrey Glassberg)
Region: Los Angeles County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Jan 07, 2010
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