Attributes of Echinargus isola

Reakirt's Blue
Echinargus isola (Reakirt, [1867])

Family: Lycaenidae
Subfamily: Polyommatinae
Identification: Upperside of male light blue with darker veins and dusky border; female darker. Underside of forewing with postmedian row of 5 round black spots circled with white.
Wing Span: 3/4 - 1 1/8 inches (2 - 2.9 cm).
Life History: Males patrol for females with an erratic flight during daytime. Females lay eggs singly on flower buds of host during midday. Caterpillars eat flowers and seedpods, sometimes leaves; and are tended by ants which presumably protect the caterpillars in return for their sugary secretions.
Flight: All year in South Texas; 3 broods from March-November in the remainder of its residential range; migrates north once each year after hibernating in the south.
Caterpillar Hosts: Many plants in the pea family (Fabaceae) including yellow sweet clover (Melilotus officinalis), rattleweed (Astragalus), mesquite (Prosopis), indigo bush (Dalea), mimosa (Albizia), and indigo (Indigofera) species.
Adult Food: Flower nectar from a variety of herbs including spearmint and white sweet clover.
Habitat: Grasslands, fields, desert, meadows, weedy areas, creeksides.
Range: Resident from southern California, the Southwest, and Texas through Mexico and Central America to Costa Rica. Summer migrant north and east through the Mississippi River states to Wisconsin and Ohio.
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: None reported.
Taxonomy Notes:

Images of Echinargus isola

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Echinargus isola - Hemiargus_isolaSanders2.jpg

Echinargus isola - Hemiargus_isolaSanders2.jpg

Echinargus isola - Hemiargus_isolaSanders.jpg

Echinargus isola - Hemiargus_isolaSanders.jpg

Echinargus isola - Echinargus_isola-Lytle.jpg

Echinargus isola - Echinargus_isola-Lytle.jpg

The map below displays all BAMONA data for this species and has three different data layers:
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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
March 15, 2017 gpstewart Burnet County, Texas, United States March 26, 2017 Details
March 25, 2017 abwest Bexar County, Texas, United States March 26, 2017 Details
May 26, 2015 JoseBonner Texas, Kimble County, United States February 20, 2017 Details
May 23, 2015 JoseBonner Texas, Tom Green County, United States February 06, 2017 Details
October 29, 2016 billwx Garfield County, Oklahoma, United States November 09, 2016 Details
October 29, 2016 billwx Garfield County, Oklahoma, United States November 09, 2016 Details
October 06, 2016 frogbandit Bernalillo County, New Mexico, United States November 01, 2016 Details
July 31, 2009 Esjay Burnett County, Wisconsin, United States October 08, 2016 Details
August 05, 2016 Esjay Burnett County, Wisconsin, United States October 08, 2016 Details
July 30, 2016 aarongunnar Dane County, Wisconsin, United States October 02, 2016 Details
July 13, 2016 dpgbfly1 Isanti County, Minnesota, United States September 11, 2016 Details
August 14, 2016 John Wilson Cibola County, New Mexico, United States September 01, 2016 Details
August 12, 2016 Bonnie Morrison Howard County, Texas, United States August 15, 2016 Details
August 13, 2016 bjones7777 Shelby County, Tennessee, United States August 14, 2016 Details
June 01, 2016 gpstewart Texas, United States, Williamson County July 28, 2016 Details
June 22, 2016 marvelisticme Texas, United States, Wise County July 17, 2016 Details
May 21, 2016 philip.woodscc@gmail.com Texas, Kendall County, United States July 08, 2016 Details
July 02, 2016 billwx Garfield County, Oklahoma, United States July 08, 2016 Details
May 14, 2016 D. Dodd Texas, United States, Val Verde County July 07, 2016 Details
May 16, 2016 D. Dodd Brewster County, Texas, United States July 07, 2016 Details
July 02, 2016 wsllltx Dallas County, Texas, United States July 03, 2016 Details
June 16, 2016 John Wilson Socorro County, New Mexico, United States July 01, 2016 Details
June 16, 2016 Bdog San Diego County, California, United States June 18, 2016 Details
July 22, 2013 GCSnelling Cochise County, Arizona, United States June 17, 2016 Details
June 04, 2016 gpstewart Texas, United States, Williamson County June 05, 2016 Details
May 30, 2016 John Wilson Socorro County, New Mexico, United States May 31, 2016 Details
May 27, 2016 billwx Garfield County, Oklahoma, United States May 28, 2016 Details
May 01, 2016 Robalero Hidalgo County, Texas, United States May 03, 2016 Details
March 26, 2016 gpstewart Texas, Travis County, United States March 28, 2016 Details
March 14, 2016 mbowling Texas, Presidio County, United States March 16, 2016 Details
December 18, 2014 Silverbeard Michoacan de Ocampo, Mexico December 27, 2015 Details
August 01, 2015 lorriemcwhinney Pima County, Arizona, United States November 13, 2015 Details
April 23, 2015 grayhairstreak Brewster County, Texas, United States August 23, 2015 Details
August 04, 2014 gpstewart Texas, United States, Williamson County August 23, 2015 Details
June 19, 2014 Shirley Wilkerson Comanche County, Texas, United States July 27, 2015 Details
June 02, 2015 Sparks7 Yavapai County, Arizona, United States July 14, 2015 Details
May 30, 2015 John Wilson Socorro County, New Mexico, United States June 10, 2015 Details
May 26, 2015 Sparks7 Yavapai County, Arizona, United States June 10, 2015 Details
June 07, 2015 Redheart Canyonlands Bandera County, Texas, United States June 09, 2015 Details
May 11, 2015 Sparks7 Yavapai County, Arizona, United States June 06, 2015 Details
June 04, 2015 Robalero Hidalgo County, Texas, United States June 04, 2015 Details
June 01, 2015 mbowling Texas, Reeves County, United States June 02, 2015 Details
May 16, 2015 Robert Gorman San Diego County, California, United States May 30, 2015 Details
November 08, 2014 ncrosbyrd Hidalgo County, Texas, United States May 30, 2015 Details
May 30, 2015 whbauer Bexar County, Texas, United States May 30, 2015 Details
December 22, 2014 Lindsay Archimbaud Maricopa County, Arizona, United States May 26, 2015 Details
May 02, 2015 opiliones Clark County, Nevada, United States May 15, 2015 Details
May 09, 2015 azukoff Finney County, Kansas, United States May 13, 2015 Details
April 08, 2015 KristyBaker Hidalgo County, Texas, United States May 06, 2015 Details
April 12, 2015 opiliones Clark County, Nevada, United States April 14, 2015 Details