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 49 - 72 of 141 verified sightings
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: 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
Observation date: Jan 30, 2009
Submitted by: Ken Davenport (Ken Davenport)
Region: Santa Barbara County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Jan 06, 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: Jan 06, 2010
Observation date: Jun 01, 1978
Submitted by: legacy.reporter (Glenn Gorelick)
Region: Santa Barbara County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Jan 06, 2010
Observation date: Feb 27, 1966
Submitted by: ray.stanford@st... (Ray Stanford)
Region: Los Angeles County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Jan 06, 2010
Observation date: Aug 02, 1967
Submitted by: legacy.reporter (Bob Koyama)
Region: Orange County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Jan 05, 2010
Observation date: May 03, 1972
Submitted by: legacy.reporter (Bob Koyama)
Region: Orange County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Jan 05, 2010
Observation date: Jun 12, 1972
Submitted by: legacy.reporter (Larry Orsak)
Region: Orange County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Jan 05, 2010
Observation date: Jun 05, 1975
Submitted by: legacy.reporter (Larry Orsak)
Region: Orange County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Jan 05, 2010
Observation date: Apr 25, 1972
Submitted by: legacy.reporter (Bob Koyama)
Region: Orange County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Jan 05, 2010
Observation date: Apr 23, 1972
Submitted by: legacy.reporter (Charles Sexton)
Region: Orange County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Jan 05, 2010
Observation date: May 10, 1972
Submitted by: legacy.reporter (Bob Koyama)
Region: Orange County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Jan 05, 2010
Observation date: Jun 23, 1968
Submitted by: legacy.reporter (Bob Koyama)
Region: Orange County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Jan 05, 2010
Observation date: Apr 28, 1972
Submitted by: legacy.reporter (Norman Nakanishi)
Region: Orange County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Jan 05, 2010
Observation date: May 28, 1972
Submitted by: legacy.reporter (Charles Sexton)
Region: Orange County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Jan 05, 2010
Observation date: May 23, 1972
Submitted by: legacy.reporter (Bob Koyama)
Region: Orange County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Jan 05, 2010
Observation date: Jun 17, 1998
Submitted by: legacy.reporter (Jeffrey Glassberg)
Region: San Diego County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Jan 05, 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 05, 2010
Observation date: Jun 14, 1985
Submitted by: Ken Davenport (Ken Davenport)
Region: San Bernardino County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Jan 04, 2010
Observation date: Jul 05, 1918
Submitted by: legacy.reporter (J. A. Comstock)
Region: Kern County, California, United States
Verified by: legacy.verifier (J. A. Comstock)
Verified date: Jan 04, 2010
Observation date: May 26, 1934
Submitted by: legacy.reporter (J. Donald Eff)
Region: Los Angeles County, California, United States
Verified by: legacy.verifier (William H. Howe)
Verified date: Dec 17, 2009
Observation date: May 06, 1962
Submitted by: legacy.reporter (J. Donald Eff)
Region: San Diego County, California, United States
Verified by: legacy.verifier (William H. Howe)
Verified date: Dec 17, 2009
Observation date: Sep 11, 1999
Submitted by: Ken Davenport (Ken Davenport)
Region: Kern County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Dec 08, 2009
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