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 - OrangeSulphur_small.jpg
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Colias eurytheme - Colias_eurytheme.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
July 09, 2016 Anne Wills Putnam County, West Virginia, United States August 24, 2016 Details
August 21, 2016 Allen Gathman Alexander County, Illinois, United States August 22, 2016 Details
August 13, 2016 S. J. Stedman (Susan E. Pirolo) Putnam County, Tennessee, United States August 22, 2016 Details
August 09, 2016 mathgeek Jackson County, Illinois, United States August 21, 2016 Details
August 19, 2016 jacqueline67 Ontario, Canada August 20, 2016 Details
July 20, 2016 Sue Orlowski Lincoln County, Washington, United States August 18, 2016 Details
August 03, 2016 Sue Orlowski Lincoln County, Washington, United States August 18, 2016 Details
August 09, 2016 yardbird Calaveras County, California, United States August 17, 2016 Details
August 08, 2016 yardbird Tuolumne County, California, United States August 16, 2016 Details
August 10, 2016 crprice Ripley County, Missouri, United States August 16, 2016 Details
August 13, 2016 Doug Bruce Overton County, Tennessee, United States August 15, 2016 Details
August 15, 2016 davidboon Monroe County, Michigan, United States August 15, 2016 Details
August 13, 2016 elegrand Putnam County, Tennessee, United States August 15, 2016 Details
August 03, 2016 Vickie Modoc County, California, United States August 12, 2016 Details
August 07, 2016 sharin Clarion County, Pennsylvania, United States August 09, 2016 Details
August 08, 2016 Cathy Weiner New York County, New York, United States August 09, 2016 Details
August 05, 2016 BeaLaporte Ontario, Canada August 09, 2016 Details
August 08, 2016 sarabseth Alameda County, California, United States August 09, 2016 Details
August 07, 2016 erinlale Clark County, Nevada, United States August 07, 2016 Details
July 29, 2016 digginflowers Lancaster County, Pennsylvania, United States July 30, 2016 Details
June 08, 2016 ncrosbyrd Los Angeles County, California, United States July 21, 2016 Details
June 12, 2016 ncrosbyrd Tulare County, California, United States July 21, 2016 Details
July 21, 2016 stephen stedman Moore County, Tennessee, United States July 21, 2016 Details
July 17, 2016 hmclin York County, Pennsylvania, United States July 18, 2016 Details
July 03, 2016 Allen Gathman Cape Girardeau County, Missouri, United States July 18, 2016 Details
June 09, 2016 RichHubie Mendocino County, California, United States July 17, 2016 Details
August 28, 2014 RichHubie Mendocino County, California, United States July 17, 2016 Details
July 03, 2016 MAKI Inyo County, California, United States July 17, 2016 Details
July 17, 2016 Jonathan Clark Catahoula Parish, Louisiana, United States July 17, 2016 Details
July 09, 2016 mathgeek Jackson County, Illinois, United States July 14, 2016 Details
July 04, 2016 Doug Bruce Moore County, Tennessee, United States July 13, 2016 Details
July 10, 2016 joep01 Allegheny County, Pennsylvania, United States July 10, 2016 Details
July 08, 2016 ButterBelle Putnam County, Tennessee, United States July 09, 2016 Details
June 17, 2016 John LeBlanc Madison County, Virginia, United States July 08, 2016 Details
June 18, 2016 John LeBlanc Madison County, Virginia, United States July 08, 2016 Details
July 02, 2016 billwx Garfield County, Oklahoma, United States July 08, 2016 Details
July 02, 2016 billwx Garfield County, Oklahoma, United States July 08, 2016 Details
July 07, 2016 jvkopple2 Kalkaska County, Michigan, United States July 08, 2016 Details
July 03, 2016 Doug Bruce Gibson County, Tennessee, United States July 04, 2016 Details
July 04, 2016 Bonnie Morrison Howard County, Texas, United States July 04, 2016 Details
July 02, 2016 Doug Bruce Crockett County, Tennessee, United States July 03, 2016 Details
July 02, 2016 Doug Bruce Gibson County, Tennessee, United States July 03, 2016 Details
July 01, 2016 ButterBelle Putnam County, Tennessee, United States July 02, 2016 Details
June 19, 2016 Doug Bruce Meigs County, Tennessee, United States June 28, 2016 Details
June 26, 2016 Doug Bruce Pickett County, Tennessee, United States June 28, 2016 Details
June 25, 2016 billwx Garfield County, Oklahoma, United States June 28, 2016 Details
June 16, 2016 Robert Putnam Johnson County, Missouri, United States June 27, 2016 Details
June 14, 2016 aarongunnar Jefferson County, Wisconsin, United States June 25, 2016 Details
June 21, 2016 ButterBelle Putnam County, Tennessee, United States June 21, 2016 Details
June 11, 2016 Doug Bruce Carter County, Tennessee, United States June 17, 2016 Details