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 121 - 141 of 141 verified sightings
Observation date: Jun 21, 1978
Submitted by: Ken Davenport (Ken Davenport)
Region: Kern County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Aug 21, 2009
Observation date: Jun 24, 1978
Submitted by: Ken Davenport (Ken Davenport)
Region: San Bernardino County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Aug 21, 2009
Observation date: Jun 30, 1993
Submitted by: Ken Davenport (Ken Davenport)
Region: Los Angeles County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Aug 21, 2009
Observation date: Jun 22, 2009
Submitted by: Ken Davenport (Ken Davenport)
Region: Santa Barbara County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Jun 26, 2009
Observation date: May 17, 2009
Submitted by: Ken Davenport (Ken Davenport)
Region: Santa Barbara County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Jun 04, 2009
Observation date: May 10, 2009
Submitted by: Ken Davenport (Ken Davenport)
Region: Ventura County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: May 18, 2009
Observation date: May 09, 2009
Submitted by: Ken Davenport (Ken Davenport)
Region: Santa Barbara County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: May 18, 2009
Observation date: unknown
Submitted by: legacy.reporter
Region: San Luis Obispo County, California, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
Observation date: unknown
Submitted by: legacy.reporter
Region: San Diego County, California, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
Observation date: unknown
Submitted by: legacy.reporter
Region: San Bernardino County, California, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
Observation date: unknown
Submitted by: legacy.reporter
Region: Santa Cruz Island County, California, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
Observation date: unknown
Submitted by: legacy.reporter
Region: Orange County, California, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
Observation date: unknown
Submitted by: legacy.reporter
Region: Santa Barbara County, California, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
Observation date: unknown
Submitted by: legacy.reporter
Region: Imperial County, California, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
Observation date: unknown
Submitted by: legacy.reporter
Region: Ventura County, California, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
Observation date: unknown
Submitted by: legacy.reporter
Region: Baja California, Mexico
Verified by: legacy.verifier
Verified date: Dec 31, 2004
Observation date: unknown
Submitted by: legacy.reporter
Region: Tulare County, California, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
Observation date: unknown
Submitted by: legacy.reporter
Region: Riverside County, California, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
Observation date: unknown
Submitted by: legacy.reporter
Region: Kern County, California, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
Observation date: unknown
Submitted by: legacy.reporter
Region: Monterey County, California, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
Observation date: unknown
Submitted by: legacy.reporter
Region: Los Angeles County, California, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
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