Pink-edged Sulphur
Colias interior Scudder, 1862
Family: Pieridae
Subfamily: Coliadinae
Identification: Both sexes with conspicuous pink wing edges. Male yellow; female yellow or white (very rarely). Upperside of male with black border; border on female may be incomplete or only seen at tip of wing. Underside of hindwing clear yellow with single silver cell spot circled in pink.
Wing Span: 1 1/2 - 2 5/8 inches (3.9 - 6.6 cm).
Life History: Males patrol with a slow flight for females. Eggs are laid in midsummer on blueberry leaves, and young caterpillars overwinter. Most feeding occurs the following spring.
Flight: One flight from June-August.
Caterpillar Hosts: Various blueberry plants (Vaccinium species) in the heath family (Ericaceae).
Adult Food: Nectar from flowers of bristly sarsaparilla and orange hawkweed.
Habitat: Shrubby openings in woods, bogs, or scrub areas where Ericaceae grows; often in burned or logged sites.
Range: From British Columbia and eastern Oregon east through the Great Lakes area to northern New England. Isolated population in central Appalachians of northeast Pennsylvania, western Maryland, eastern West Virginia, and northwest Virginia.
Conservation: Mountain populations of southern Appalachians should be monitored.
NCGR: G5 - Demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery.
Management Needs: Investigate habitat management needs,if any, in southern Appalachian habitats.
Comments: NULL
Verified Sightings
Displaying 1 - 24 of 285 verified sightings
Observation date: Jul 18, 2005
Submitted by: hydapse
Region: Carbon County, Montana, United States
Verified by: J_Martineau
Verified date: Feb 25, 2019
Observation date: Jul 09, 2017
Submitted by: Paul Prappas
Region: British Columbia, Canada
Verified by: Norbert Kondla
Verified date: Nov 24, 2018
Observation date: Aug 10, 2018
Submitted by: plex1ppus
Region: Flathead County, Montana, United States
Verified by: J_Martineau
Verified date: Oct 10, 2018
Observation date: Aug 10, 2018
Submitted by: plex1ppus
Region: Flathead County, Montana, United States
Verified by: J_Martineau
Verified date: Aug 29, 2018
Observation date: Aug 10, 2018
Submitted by: plex1ppus
Region: Flathead County, Montana, United States
Verified by: J_Martineau
Verified date: Aug 29, 2018
Observation date: Jul 28, 2014
Submitted by: Falcontennis
Region: Alger County, Michigan, United States
Verified by: rosslayberry
Verified date: Aug 26, 2018
Observation date: Jul 27, 2018
Submitted by: Deb Hoagland
Region: Missoula County, Montana, United States
Verified by: J_Martineau
Verified date: Jul 30, 2018
Observation date: Jun 25, 2018
Submitted by: ellenjones6
Region: Essex County, New York, United States
Verified by: rosslayberry
Verified date: Jul 02, 2018
Observation date: Jul 24, 2017
Submitted by: JKlodzen
Region: Custer County, Idaho, United States
Verified by: stevekohler
Verified date: Jun 19, 2018
Observation date: May 12, 2018
Submitted by: JEANH
Region: Ontario, Canada
Verified by: CA Ivy
Verified date: May 18, 2018
Observation date: Jul 09, 2017
Submitted by: BOGwalker
Region: St. Louis County, Minnesota, United States
Verified by: Tom Middagh
Verified date: Dec 07, 2017
Observation date: Jul 18, 2014
Submitted by: Kathy Brown
Region: Hancock County, Maine, United States
Verified by: rosslayberry
Verified date: Sep 08, 2017
Observation date: Jul 16, 2017
Submitted by: purplechickadee
Region: Franklin County, New York, United States
Verified by: reutere
Verified date: Aug 03, 2017
Observation date: Jul 28, 2017
Submitted by: dsperanza
Region: Montana, United States
Verified by: J_Martineau
Verified date: Jul 31, 2017
Observation date: Jul 15, 2017
Submitted by: jvkopple2
Region: Kalkaska County, Michigan, United States
Verified by: rosslayberry
Verified date: Jul 16, 2017
Observation date: Jul 15, 2017
Submitted by: philsfotos1
Region: Iosco County, Michigan, United States
Verified by: rosslayberry
Verified date: Jul 16, 2017
Observation date: Jun 26, 2015
Submitted by: ellenjones6
Region: Franklin County, New York, United States
Verified by: rosslayberry
Verified date: Apr 08, 2017
Observation date: Jul 02, 2016
Submitted by: Chris Blomme
Region: Ontario, Canada
Verified by: CA Ivy
Verified date: Dec 19, 2016
Observation date: Jul 28, 2016
Submitted by: 4wildlife
Region: Hancock County, Maine, United States
Verified by: rosslayberry
Verified date: Sep 11, 2016
Observation date: Jul 02, 2016
Submitted by: Chris Blomme
Region: Ontario, Canada
Verified by: rosslayberry
Verified date: Jul 08, 2016
Observation date: Jun 29, 2016
Submitted by: M Kuhlman
Region: Missoula County, Montana, United States
Verified by: J_Martineau
Verified date: Jun 30, 2016
Observation date: Jul 13, 2015
Submitted by: jvkopple2
Region: Ontario, Canada
Verified by: rosslayberry
Verified date: Jul 24, 2015
Observation date: Jul 09, 2015
Submitted by: jvkopple2
Region: Kalkaska County, Michigan, United States
Verified by: rosslayberry
Verified date: Jul 24, 2015
Observation date: Jul 09, 2015
Submitted by: treichard
Region: Ontario, Canada
Verified by: rosslayberry
Verified date: Jul 15, 2015
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