Attributes of Colias eurytheme

Orange Sulphur
Colias eurytheme Boisduval, 1852

Family: Pieridae
Subfamily: Coliadinae
Identification: Quite variable. Upperside of male yellow with orange overlay, yellow veins, wide black border, and dark black cell spot. Female yellow or white with irregular black border surrounding light spots. Underside hindwing spot silver with 2 concentric dark rings, and a spot above it.
Wing Span: 1 3/8 - 2 3/4 inches (3.5 - 7 cm).
Life History: Males patrol for receptive females, who lay eggs singly on top of host plant leaves. Most feeding takes place at night. Young caterpillars chew holes in the tops of leaves, then later feed from the leaf tip. Older caterpillars eat half of the leaf before moving to the other half. Chrysalids overwinter.
Flight: Two-three flights in the north from June-October, 4-5 in the south from March-November.
Caterpillar Hosts: Plants in the pea family (Fabaceae) including alfalfa (Medicago sativa), white clover (Trifolium repens), and white sweet clover (Melilotus alba).
Adult Food: Nectar from many kinds of flowers including dandelion, milkweeds, goldenrods, and asters.
Habitat: A wide variety of open sites, especially clover and alfalfa fields, mowed fields, vacant lots, meadows, road edges.
Range: Southern Canada to central Mexico, coast to coast in the United States except for the Florida peninsula. Comments: One of the most widespread and common butterflies in North America.
Conservation: Not required.
NCGR: G5 - Demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery.
Management Needs: Caterpillars can be very destructive in alfalfa fields.
Taxonomy Notes:

Images of Colias eurytheme

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Colias eurytheme - Colias-eurytheme-ventral-Queener-crop.jpg

Colias eurytheme - Colias-eurytheme-ventral-Queener-crop.jpg
Colias eurytheme - OrangeSulphur2_small.jpg

Colias eurytheme - OrangeSulphur2_small.jpg
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Colias eurytheme - Orangesulphurcrop.jpg
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Colias eurytheme - OrangeSulphur_small.jpg
Colias eurytheme - Colias_eurytheme.jpg

Colias eurytheme - Colias_eurytheme.jpg
Colias eurytheme - Colias_eurytheme2.jpg

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Colias eurytheme - Colias_eurythemeSanders.jpg

Colias eurytheme - Colias_eurythemeSanders.jpg
Colias eurytheme - TammyKnuth-Colias_eurytheme-crop.jpg

Colias eurytheme - TammyKnuth-Colias_eurytheme-crop.jpg

The map below displays all BAMONA data for this species and has three different data layers:
1. All records (yellow dots)   2. Recently verified records (orange dots)*   3. US county records (purple)

There are also three base layers: 1. Satellite    2. Normal   3. Hybrid

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*The orange dots on the map provide access to information about the 400 most recently verified sightings of this species. Sometimes, there are several records at the same location. Use the table view to access these records.

By default, the fifty most recently verified sightings are below. Sort by Observation Date to see the most recent sightings, or filter the sightings by region to get a regional list.

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Observation Date Submitter Region Verified Datesort icon
April 09, 2014 gunhilda Payne County, Oklahoma, United States April 09, 2014 Details
April 13, 2013 John Many Wings Frederick County, Maryland, United States April 07, 2014 Details
June 14, 2013 curtis.lehman Clay County, West Virginia, United States March 19, 2014 Details
May 25, 2012 rosenthal.k Fairfax County, Virginia, United States March 16, 2014 Details
June 08, 2012 rosenthal.k Fairfax County, Virginia, United States March 16, 2014 Details
September 10, 2012 Becky Byrum Delaware County, Indiana, United States March 14, 2014 Details
February 20, 2014 Robert Gorman Riverside County, California, United States February 21, 2014 Details
February 14, 2014 Sparks7 Burnet County, Texas, United States February 15, 2014 Details
August 02, 2013 Kimberchick Lehigh County, Pennsylvania, United States February 11, 2014 Details
August 31, 2013 Chip Krilowicz Burlington County, New Jersey, United States January 30, 2014 Details
October 10, 2007 ddodd Gray County, Texas, United States January 21, 2014 Details
September 06, 2013 mikeconley Jefferson County, Missouri, United States January 20, 2014 Details
December 27, 2013 Sparks7 Burnet County, Texas, United States January 18, 2014 Details
September 10, 2012 Becky Byrum Delaware County, Indiana, United States January 16, 2014 Details
September 13, 2012 Alice Greene County, Indiana, United States January 16, 2014 Details
January 11, 2014 Sparks7 Burnet County, Texas, United States January 12, 2014 Details
December 15, 2013 Sparks7 Burnet County, Texas, United States January 09, 2014 Details
September 28, 2013 billy.yung New York County, New York, United States January 04, 2014 Details
November 14, 2013 Sparks7 Burnet County, Texas, United States January 03, 2014 Details
March 14, 1971 stomlins701 Bexar County, Texas, United States December 28, 2013 Details
March 14, 1971 stomlins701 Bexar County, Texas, United States December 28, 2013 Details
March 14, 1971 stomlins701 Bexar County, Texas, United States December 28, 2013 Details
September 05, 2013 plex1ppus Grant County, Washington, United States December 26, 2013 Details
September 15, 2013 CA Ivy Adair County, Oklahoma, United States December 24, 2013 Details
September 15, 2013 CA Ivy Adair County, Oklahoma, United States December 22, 2013 Details
August 28, 2010 diwalks2 San Diego County, California, United States December 13, 2013 Details
August 28, 2011 Robert Gorman San Diego County, California, United States December 05, 2013 Details
March 17, 2013 Sparks7 Burnet County, Texas, United States December 05, 2013 Details
August 17, 2013 pbrody Montgomery County, Maryland, United States December 04, 2013 Details
November 21, 2013 Sparks7 Burnet County, Texas, United States November 22, 2013 Details
October 02, 2013 toddewen Tippecanoe County, Indiana, United States November 16, 2013 Details
October 30, 2013 toddewen Ingham County, Michigan, United States November 15, 2013 Details
November 01, 2013 treichard Riverside County, California, United States November 11, 2013 Details
September 04, 2013 Jeff Brown Montgomery County, Ohio, United States November 06, 2013 Details
November 05, 2013 CA Ivy Sebastian County, Arkansas, United States November 05, 2013 Details
May 13, 2012 Robert Gorman San Diego County, California, United States November 02, 2013 Details
November 01, 2013 CA Ivy Sebastian County, Arkansas, United States November 01, 2013 Details
May 15, 2012 Robert Gorman San Diego County, California, United States November 01, 2013 Details
May 13, 2012 Robert Gorman San Diego County, California, United States November 01, 2013 Details
October 02, 2013 toddewen Tippecanoe County, Indiana, United States October 31, 2013 Details
October 17, 2013 jim8435wisc Jackson County, Wisconsin, United States October 29, 2013 Details
September 09, 2011 Rob7789 Lyon County, Kentucky, United States October 29, 2013 Details
October 20, 2013 CA Ivy Sebastian County, Arkansas, United States October 27, 2013 Details
October 23, 2013 gunhilda Payne County, Oklahoma, United States October 27, 2013 Details
October 14, 2013 treichard Howard County, Maryland, United States October 17, 2013 Details
October 14, 2013 treichard Howard County, Maryland, United States October 17, 2013 Details
October 14, 2013 treichard Howard County, Maryland, United States October 17, 2013 Details
October 16, 2013 NedManger Sacramento County, California, United States October 17, 2013 Details
August 10, 2013 DebW Curry County, New Mexico, United States October 15, 2013 Details
October 05, 2013 rdhealy1951 Hart County, Kentucky, United States October 14, 2013 Details