Attributes of Euphilotes battoides

Western Square-dotted Blue
Euphilotes battoides (Behr, 1867)

Family: Lycaenidae
Subfamily: Polyommatinae
Identification: Extremely variable geographically. Upperside of female brown often with orange band on outer edge of hindwing. Male blue with dark borders. Male may have orange band on outer edge of hindwing. Underside is off-white to gray with black postmedian spots ranging from square to round and from large to small, again depending on subspecies. Best identified by associated host, locality, and season.
Wing Span: 11/16 - 13/16 inches (1.6 - 1.7 cm).
Life History: Males patrol all day near host plants to find receptive females. Eggs are laid singly on host plant flowers; caterpillars eat flowers and fruits, and are protected by ants. Chrysalids hibernate in sand or leaf litter.
Flight: One flight; Mid-April to August depending on location and host bloom.
Caterpillar Hosts: Various wild buckwheats (Eriogonum species) including coastal buckwheat and sulphur-flower.
Adult Food: Flower nectar especially that from Eriogonum species.
Habitat: Varies by subspecies; includes, prairie, open woodlands, chaparral, dunes, and alpine rock gardens.
Range: Spotty distribution from Washington south to Baja California Norte, thence west to southern Colorado and New Mexico.
Conservation: Most populations are probably secure, but invasive alien weeds such as cheatgrass may threaten an unknown proportion.
NCGR: G5 - Demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery. The Comstock's Blue (subspecies comstocki), and an unnamed subspecies all have The Nature Conservancy rank of T1 - Critically imperiled because of extreme rarity (5 or fewer occurrences, or very few remaining individuals), or because of some factor of its biology making it especially vulnerable to extinction. (Critically endangered throughout its range).
Management Needs: Maintain habitat together with host plants of all known populations.
Taxonomy Notes:

Images of Euphilotes battoides

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Euphilotes battoides - euphbace.jpg

Euphilotes battoides - euphbace.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
July 28, 2014 joeschelling Sandoval County, New Mexico, United States August 03, 2014 Details
June 08, 2013 plex1ppus Spokane County, Washington, United States December 26, 2013 Details
July 03, 2011 randimal Okanogan County, Washington, United States December 26, 2013 Details
August 19, 2011 joeschelling Bernalillo County, New Mexico, United States September 24, 2013 Details
June 10, 2013 HHowell Teton County, Wyoming, United States August 29, 2013 Details
June 24, 2012 PDunwiddie Kittitas County, Washington, United States October 23, 2012 Details
June 24, 2012 PDunwiddie Kittitas County, Washington, United States October 23, 2012 Details
July 02, 2012 eal79 Tulare County, California, United States July 16, 2012 Details
June 16, 2012 PDunwiddie Kittitas County, Washington, United States June 18, 2012 Details
September 07, 1998 Doug Taron Tuolumne County, California, United States October 18, 2011 Details
July 12, 2011 Jdammarell Lincoln County, Washington, United States July 23, 2011 Details
June 01, 2011 plex1ppus Grant County, Washington, United States June 13, 2011 Details
July 20, 1974 legacy.reporter (Jim Brock) Mono County, California, United States May 01, 2011 Details
July 14, 1990 legacy.reporter (Jim Brock) Alpine County, California, United States May 01, 2011 Details
July 14, 1990 legacy.reporter (Jim Brock) Mono County, California, United States May 01, 2011 Details
July 25, 1921 legacy.reporter (unknown) Los Angeles County, California, United States May 01, 2011 Details
July 13, 1958 legacy.reporter (unknown) Fresno County, California, United States May 01, 2011 Details
May 14, 2004 legacy.reporter (G. Pratt & J. Emmel) Inyo County, California, United States May 01, 2011 Details
July 05, 2008 legacy.reporter (Jess Morton) Los Angeles County, California, United States May 01, 2011 Details
June 30, 2008 legacy.reporter (Jim Brock) Los Angeles County, California, United States May 01, 2011 Details
July 24, 2005 legacy.reporter (Gordon Pratt & John F. Emmel) Inyo County, California, United States May 01, 2011 Details
June 13, 2009 plex1ppus (plex1ppus) Spokane County, Washington, United States March 09, 2011 Details
July 16, 2010 legacy.reporter (Paul Opler and EviBuckner-Opler ) Madison County, Montana, United States December 31, 2010 Details
July 16, 2010 legacy.reporter (Paul Opler and EviBuckner-Opler ) Madison County, Montana, United States December 31, 2010 Details
July 25, 1921 legacy.reporter (unknown) Los Angeles County, California, United States December 31, 2010 Details
July 05, 2008 legacy.reporter (Jess Morton) Los Angeles County, California, United States December 31, 2010 Details
June 30, 2008 legacy.reporter (Jim Brock) Los Angeles County, California, United States December 31, 2010 Details
July 20, 1974 legacy.reporter (Jim Brock) Mono County, California, United States December 31, 2010 Details
July 14, 1990 legacy.reporter (Jim Brock) Alpine County, California, United States December 31, 2010 Details
July 14, 1990 legacy.reporter (Jim Brock) Mono County, California, United States December 31, 2010 Details
May 14, 2004 legacy.reporter (G. Pratt & J. Emmel) Inyo County, California, United States December 31, 2010 Details
July 24, 2005 legacy.reporter (Gordon Pratt & John F. Emmel) Inyo County, California, United States December 31, 2010 Details
June 02, 1980 legacy.reporter (J. Emmel, O. Shields) Inyo County, California, United States January 07, 2010 Details
May 25, 1985 legacy.reporter (J. Emmel, O. Shields) Inyo County, California, United States January 07, 2010 Details
May 01, 1986 legacy.reporter (Gordon Pratt) Inyo County, California, United States January 07, 2010 Details
May 20, 1984 legacy.reporter (Gordon Pratt) Inyo County, California, United States January 07, 2010 Details
July 17, 1992 legacy.reporter (John F Emmel, Greg Ballmer) Inyo County, California, United States January 07, 2010 Details
July 17, 1982 legacy.reporter (John F. Emmel) Inyo County, California, United States January 07, 2010 Details
July 10, 1978 legacy.reporter (John F. Emmel) Inyo County, California, United States January 07, 2010 Details
July 10, 1978 legacy.reporter (John F. Emmel) Inyo County, California, United States January 07, 2010 Details
July 15, 1988 legacy.reporter (John F. Emmel) Inyo County, California, United States January 07, 2010 Details
July 09, 1965 ray.stanford@stanfordalumni.org (Ray Stanford) Los Angeles County, California, United States January 07, 2010 Details
July 30, 1972 legacy.reporter (John F. Emmel) Los Angeles County, California, United States January 07, 2010 Details
August 12, 1973 legacy.reporter (C. D. MacNeill) Inyo County, California, United States January 07, 2010 Details
July 07, 1951 legacy.reporter (Lloyd Martin) Inyo County, California, United States January 05, 2010 Details
July 18, 1984 legacy.reporter (Richard Arnold) Los Angeles County, California, United States January 05, 2010 Details
August 07, 1997 legacy.reporter (Jeffrey Glassberg) Tuolumne County, California, United States January 05, 2010 Details
July 08, 1915 legacy.reporter (J. A. Comstock) Tulare County, California, United States January 05, 2010 Details
July 23, 1992 Ken Davenport (Ken Davenport) Tulare County, California, United States December 16, 2009 Details
July 15, 1933 legacy.reporter (John S. Garth) Mariposa County, California, United States December 16, 2009 Details