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
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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
August 24, 2014 PeterJLT Lane County, Oregon, United States August 25, 2014 Details
August 10, 2014 Carol Thornton-Anderson Edgar County, Illinois, United States August 22, 2014 Details
August 21, 2014 Beverly Carter Baxter County, Arkansas, United States August 21, 2014 Details
August 19, 2014 Carol Thornton-Anderson Champaign County, Illinois, United States August 20, 2014 Details
August 18, 2014 Ralph S. Carlson Los Angeles County, California, United States August 19, 2014 Details
July 06, 2014 padawonsb Plumas County, California, United States August 18, 2014 Details
July 06, 2014 padawonsb Plumas County, California, United States August 18, 2014 Details
May 25, 2012 Krish49 Leavenworth County, Kansas, United States August 17, 2014 Details
August 07, 2014 Bixia Alpine County, California, United States August 15, 2014 Details
August 07, 2014 Bixia Alpine County, California, United States August 15, 2014 Details
August 13, 2014 Beverly Carter Baxter County, Arkansas, United States August 13, 2014 Details
July 08, 2014 Mapper Johnson County, Illinois, United States August 11, 2014 Details
July 28, 2014 mgiffen Modoc County, California, United States August 10, 2014 Details
August 02, 2014 Bixia Alpine County, California, United States August 09, 2014 Details
August 02, 2014 Bixia Alpine County, California, United States August 09, 2014 Details
August 07, 2014 IngridD Carter County, Tennessee, United States August 09, 2014 Details
August 02, 2014 jim8435wisc Adams County, Wisconsin, United States August 05, 2014 Details
August 02, 2014 mhudson26 Lane County, Kansas, United States August 03, 2014 Details
August 02, 2014 grayhairstreak New Castle County, Delaware, United States August 02, 2014 Details
July 30, 2014 Janet Tubb Ontario, Canada July 31, 2014 Details
July 22, 2014 hmclin Adams County, Pennsylvania, United States July 30, 2014 Details
July 29, 2014 juliereid Ontario, Canada July 30, 2014 Details
July 29, 2014 Cherylee Black Ontario, Canada July 30, 2014 Details
July 29, 2014 Cherylee Black Ontario, Canada July 30, 2014 Details
June 20, 2013 adamschaffer Benton County, Arkansas, United States July 30, 2014 Details
July 27, 2014 juliereid Ontario, Canada July 28, 2014 Details
July 11, 2014 mathgeek Jackson County, Illinois, United States July 26, 2014 Details
July 26, 2014 Mapper Christian County, Illinois, United States July 26, 2014 Details
July 20, 2014 John Wilson Socorro County, New Mexico, United States July 24, 2014 Details
July 21, 2014 tom nolan Cape May County, New Jersey, United States July 22, 2014 Details
July 17, 2014 Beverly Carter Baxter County, Arkansas, United States July 21, 2014 Details
July 17, 2014 mercretas Montgomery County, Maryland, United States July 20, 2014 Details
July 05, 2014 MAKI Humboldt County, California, United States July 20, 2014 Details
July 20, 2014 grayhairstreak New Castle County, Delaware, United States July 20, 2014 Details
July 15, 2014 Mapper Johnson County, Illinois, United States July 18, 2014 Details
July 06, 2014 treichard Dauphin County, Pennsylvania, United States July 15, 2014 Details
July 05, 2014 treichard Sussex County, New Jersey, United States July 14, 2014 Details
May 11, 2014 Bixia Calaveras County, California, United States July 07, 2014 Details
July 06, 2014 stephen stedman Warren County, Tennessee, United States July 07, 2014 Details
July 31, 2010 julmast Elkhart County, Indiana, United States July 05, 2014 Details
July 05, 2014 Randy Bodkins Randolph County, West Virginia, United States July 05, 2014 Details
October 13, 2013 COA1955 Morgan County, Colorado, United States June 22, 2014 Details
June 07, 2014 Samsara Chapman Lewis And Clark County, Montana, United States June 17, 2014 Details
June 07, 2014 CA Ivy Adair County, Oklahoma, United States June 10, 2014 Details
April 30, 2014 Sue Orlowski Franklin County, Washington, United States May 19, 2014 Details
April 21, 2014 John LeBlanc Chesterfield County, Virginia, United States May 15, 2014 Details
April 24, 2014 John LeBlanc Chesterfield County, Virginia, United States May 15, 2014 Details
April 13, 2014 K Stilwell Tazewell County, Virginia, United States May 15, 2014 Details
May 07, 2014 krancmm Brazoria County, Texas, United States May 08, 2014 Details
May 06, 2014 inthelikeness Comanche County, Texas, United States May 08, 2014 Details