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

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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)

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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 29, 2016 ButterBelle Putnam County, Tennessee, United States April 29, 2016 Details
October 16, 2014 mathgeek Jackson County, Illinois, United States April 28, 2016 Details
April 27, 2016 CA Ivy Sebastian County, Arkansas, United States April 27, 2016 Details
March 02, 2013 nabaker Texas, Kimble County, United States April 25, 2016 Details
April 16, 2016 AnnL Todd County, Minnesota, United States April 19, 2016 Details
February 19, 2016 Jonathan Clark La Salle Parish, Louisiana, United States April 14, 2016 Details
November 02, 2015 ncrosbyrd Hidalgo County, Texas, United States April 06, 2016 Details
November 02, 2015 ncrosbyrd Hidalgo County, Texas, United States April 05, 2016 Details
April 03, 2016 cosmic_cat Texas, United States, Wood County April 05, 2016 Details
November 02, 2015 jbaca59 Santa Fe County, New Mexico, United States April 01, 2016 Details
March 25, 2016 PDunwiddie Bexar County, Texas, United States March 28, 2016 Details
March 19, 2016 PONYRCR San Diego County, California, United States March 22, 2016 Details
March 13, 2016 CA Ivy Sebastian County, Arkansas, United States March 13, 2016 Details
March 03, 2016 gpstewart Burnet County, Texas, United States March 03, 2016 Details
February 20, 2016 TPeterson San Bernardino County, California, United States February 28, 2016 Details
June 02, 2015 billwx Garfield County, Oklahoma, United States February 28, 2016 Details
June 28, 2015 billwx Garfield County, Oklahoma, United States February 28, 2016 Details
April 25, 2012 billwx Garfield County, Oklahoma, United States February 27, 2016 Details
July 03, 2014 billwx Garfield County, Oklahoma, United States February 27, 2016 Details
October 01, 2008 billwx Garfield County, Oklahoma, United States February 24, 2016 Details
June 14, 2015 SkrentnyJeff Cook County, Illinois, United States February 20, 2016 Details
October 01, 2014 SkrentnyJeff Cook County, Illinois, United States February 20, 2016 Details
February 10, 2016 MAKI Ventura County, California, United States February 18, 2016 Details
June 18, 2015 bobscafe British Columbia, Canada February 11, 2016 Details
June 18, 2015 bobscafe British Columbia, Canada February 11, 2016 Details
February 07, 2016 cosmic_cat Texas, Smith County, United States February 08, 2016 Details
September 01, 2013 marquy Wayne County, Michigan, United States February 03, 2016 Details
January 18, 2016 greekwriter Texas, Nueces County, United States January 24, 2016 Details
June 12, 2015 PJNosler Jackson County, Oregon, United States January 18, 2016 Details
August 07, 2015 Josiah Gilbert San Luis Obispo County, California, United States December 30, 2015 Details
September 15, 2015 Mary Franceline Malone Bucks County, Pennsylvania, United States December 29, 2015 Details
September 05, 2015 Josiah Gilbert San Luis Obispo County, California, United States December 25, 2015 Details
March 05, 2015 Josiah Gilbert San Luis Obispo County, California, United States December 17, 2015 Details
December 09, 2015 PAtreehugger57 Columbia County, Pennsylvania, United States December 10, 2015 Details
April 16, 2015 Josiah Gilbert San Luis Obispo County, California, United States December 09, 2015 Details
October 05, 2015 Doug Bruce Hardeman County, Tennessee, United States November 30, 2015 Details
July 12, 2015 ncrosbyrd Gunnison County, Colorado, United States November 22, 2015 Details
October 25, 2015 John LeBlanc Chesterfield County, Virginia, United States November 14, 2015 Details
November 04, 2015 ButterBelle Putnam County, Tennessee, United States November 04, 2015 Details
October 29, 2015 ButterBelle Putnam County, Tennessee, United States October 29, 2015 Details
October 14, 2015 stephen stedman Crockett County, Tennessee, United States October 14, 2015 Details
October 06, 2015 Doug Bruce Fayette County, Tennessee, United States October 13, 2015 Details
October 11, 2015 PONYRCR Los Angeles County, California, United States October 12, 2015 Details
October 11, 2015 brainerd Lancaster County, Pennsylvania, United States October 12, 2015 Details
October 12, 2015 vivalapaz Cleveland County, Oklahoma, United States October 12, 2015 Details
October 10, 2015 gunhilda Payne County, Oklahoma, United States October 11, 2015 Details
October 09, 2015 ButterBelle Putnam County, Tennessee, United States October 09, 2015 Details
September 30, 2015 SueCollins Clark County, Washington, United States October 08, 2015 Details
October 08, 2015 ezeemonee Santa Barbara County, California, United States October 08, 2015 Details
October 06, 2015 Doug Bruce Tipton County, Tennessee, United States October 07, 2015 Details