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

Click on an image to view full size and to see additional details.









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
Colias eurytheme - Orangesulphurcrop.jpg

Colias eurytheme - Orangesulphurcrop.jpg
Colias eurytheme - OrangeSulphur_small.jpg

Colias eurytheme - OrangeSulphur_small.jpg
Colias eurytheme - Colias_eurytheme.jpg

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

Colias eurytheme - Colias_eurytheme2.jpg
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

How to use the map:
Click on the map and move your mouse to pan.
Zoom by using the plus [+] and minus [-] on the left side of the map.
To change which map layers are displayed, click on the plus sign [+] on the right side of the map and turn on/off the data layers and base layers.

*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.

See more recently verified sightings of all species.

You don't have Javascript enabled. Hover for more information! But don't worry: you can still use this web site! You have two options:
  • enable Javascript in your browser and then refresh this page, for a much enhanced experience.
  • click the Update button every time you want to update the selection.
Observation Date Submitter Region Verified Datesort icon
September 14, 2014 wade.deyoung Montgomery County, Maryland, United States October 18, 2014 Details
September 14, 2014 wade.deyoung Montgomery County, Maryland, United States October 18, 2014 Details
September 29, 2014 jim8435wisc Lafayette County, Wisconsin, United States October 14, 2014 Details
July 08, 2014 badyak Mendocino County, California, United States October 09, 2014 Details
October 03, 2014 sarabseth Alameda County, California, United States October 05, 2014 Details
September 27, 2014 hmclin York County, Pennsylvania, United States September 30, 2014 Details
September 20, 2014 WendyJG Lee County, Illinois, United States September 29, 2014 Details
September 01, 2014 WendyJG Winnebago County, Illinois, United States September 28, 2014 Details
September 23, 2014 maria.hoffman6@gmail.com Suffolk County, New York, United States September 27, 2014 Details
July 15, 2014 RogerF Clark County, Nevada, United States September 26, 2014 Details
September 26, 2014 missjohnson Erie County, Ohio, United States September 26, 2014 Details
September 20, 2014 tom nolan Burlington County, New Jersey, United States September 24, 2014 Details
September 17, 2014 treehugger_007 Lake County, Ohio, United States September 20, 2014 Details
August 14, 2014 AllenRatz Buncombe County, North Carolina, United States September 20, 2014 Details
August 31, 2014 finatic Imperial County, California, United States September 17, 2014 Details
September 07, 2014 HHowell Grainger County, Tennessee, United States September 12, 2014 Details
September 12, 2014 Ralph S. Carlson Los Angeles County, California, United States September 12, 2014 Details
August 23, 2014 Colleen62 Ontario, Canada September 02, 2014 Details
August 28, 2014 lmreid71 Comal County, Texas, United States September 02, 2014 Details
May 25, 2014 EricOlson Boulder County, Colorado, United States August 31, 2014 Details
May 18, 2014 EricOlson Boulder County, Colorado, United States August 31, 2014 Details
August 27, 2014 EPIMEDIUM McHenry County, Illinois, United States August 31, 2014 Details
June 28, 2013 TheWayfarer21 Onslow County, North Carolina, United States August 30, 2014 Details
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