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
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Verified Sightings
Displaying 1 - 24 of 321 verified sightings
Observation date: Jul 10, 2021
Submitted by: NikkiM
Region: Carbon County, Montana, United States
Verified by: J_Martineau
Verified date: Jul 25, 2021
Observation date: Jun 30, 2021
Submitted by: Ed Rothwell
Region: Alger County, Michigan, United States
Verified by: rosslayberry
Verified date: Jul 13, 2021
Observation date: Jul 02, 2021
Submitted by: Pheasantboy77
Region: Crawford County, Michigan, United States
Verified by: rosslayberry
Verified date: Jul 11, 2021
Observation date: Jul 01, 2021
Submitted by: Pheasantboy77
Region: Crawford County, Michigan, United States
Verified by: rosslayberry
Verified date: Jul 08, 2021
Observation date: Jul 04, 2021
Submitted by: Pheasantboy77
Region: Crawford County, Michigan, United States
Verified by: rosslayberry
Verified date: Jul 08, 2021
Observation date: Jun 28, 2021
Submitted by: John Terpstra
Region: Ontario, Canada
Verified by: rosslayberry
Verified date: Jun 29, 2021
Observation date: Jun 18, 2021
Submitted by: kathybrown
Region: Hancock County, Maine, United States
Verified by: John Calhoun
Verified date: Jun 22, 2021
Observation date: Aug 06, 2016
Submitted by: Paul Prappas
Region: Wallowa County, Oregon, United States
Verified by: davidwdroppers
Verified date: Jun 18, 2021
Observation date: Jun 13, 2021
Submitted by: Pheasantboy77
Region: Crawford County, Michigan, United States
Verified by: rosslayberry
Verified date: Jun 17, 2021
Observation date: Jul 11, 2010
Submitted by: NikkiM
Region: Carbon County, Montana, United States
Verified by: J_Martineau
Verified date: Apr 27, 2021
Observation date: Aug 01, 2009
Submitted by: NikkiM
Region: Montana, United States
Verified by: J_Martineau
Verified date: Mar 27, 2021
Observation date: Jul 21, 2020
Submitted by: gasigr
Region: Wallowa County, Oregon, United States
Verified by: Ken Davenport
Verified date: Mar 16, 2021
Observation date: Sep 03, 2011
Submitted by: NikkiM
Region: Wyoming, United States
Verified by: J_Martineau
Verified date: Mar 14, 2021
Observation date: Jul 15, 2012
Submitted by: NikkiM
Region: Judith Basin County, Montana, United States
Verified by: J_Martineau
Verified date: Mar 12, 2021
Observation date: Jul 23, 2017
Submitted by: NikkiM
Region: Carbon County, Montana, United States
Verified by: J_Martineau
Verified date: Mar 11, 2021
Observation date: Jul 04, 2015
Submitted by: BarbSendelbach
Region: Franklin County, New York, United States
Verified by: rosslayberry
Verified date: Mar 08, 2021
Observation date: Sep 04, 2019
Submitted by: Ian Pepper
Region: Essex County, Massachusetts, United States
Verified by: jwileyrains
Verified date: Jan 11, 2021
Observation date: Jul 14, 2020
Submitted by: John Terpstra
Region: Ontario, Canada
Verified by: rosslayberry
Verified date: Aug 17, 2020
Observation date: Jul 22, 2020
Submitted by: dsperanza
Region: Montana, United States
Verified by: J_Martineau
Verified date: Jul 27, 2020
Observation date: Jul 15, 2020
Submitted by: Tom Dudones
Region: Franklin County, New York, United States
Verified by: rosslayberry
Verified date: Jul 19, 2020
Observation date: Jul 15, 2020
Submitted by: Tom Dudones
Region: Franklin County, New York, United States
Verified by: rosslayberry
Verified date: Jul 19, 2020
Observation date: Jul 14, 2005
Submitted by: Tom Dudones
Region: Franklin County, New York, United States
Verified by: rosslayberry
Verified date: Jul 09, 2020
Observation date: Jul 02, 2020
Submitted by: Tom Dudones
Region: Essex County, New York, United States
Verified by: rosslayberry
Verified date: Jul 02, 2020
Observation date: Jun 27, 2020
Submitted by: Benjamin Miller
Region: Crawford County, Michigan, United States
Verified by: rosslayberry
Verified date: Jun 30, 2020
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