Attributes of Plebejus acmon

Acmon Blue
Plebejus acmon (Westwood, [1851])

Family: Lycaenidae
Subfamily: Polyommatinae
Identification: Upperside of males blue with dark narrow border; female brown. Underside white with black spot pattern. Hindwing above and below with red-orange submarginal band.
Wing Span: 3/4 - 1 1/8 inches (2 - 2.9 cm).
Life History: Males patrol near hosts for females. Eggs are laid singly on leaves or flowers of host plants. Caterpillars feed on leaves, flowers, and developing seeds, and are tended by ants. Second-stage caterpillars hibernate.
Flight: Many flights from March-October.
Caterpillar Hosts: Various species of buckwheats (Eriogonum nudum), lupines (Lupinus), trefoils (lotus), and milkvetches (Astragalus).
Adult Food: Flower nectar.
Habitat: Desert, fields, prairie hills, weedy areas, road edges.
Range: Primarily California west of Sierra Nevada-Cascade Divide south to northern Baja California. Precise limits in neighboring Oregon and Nevada not ascertained.
Conservation: Not usually of conservation concern.
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 Plebejus acmon

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Plebejus acmon - Plebejus_acmonSanders.jpg

Plebejus acmon - Plebejus_acmonSanders.jpg
Plebejus acmon - 3820_56.jpg

Plebejus acmon - 3820_56.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
May 19, 2013 Finatic02 San Diego County, California, United States December 18, 2014 Details
July 04, 2012 Ann and Rob Simpson Yellowstone National Park County, Wyoming, United States December 15, 2014 Details
July 05, 2014 J_Martineau Sheridan County, Wyoming, United States December 02, 2014 Details
July 08, 2014 J_Martineau Sheridan County, Wyoming, United States December 02, 2014 Details
September 01, 2014 austlee California, United States September 15, 2014 Details
July 31, 2014 sarabseth Alameda County, California, United States August 11, 2014 Details
July 31, 2014 MAKI Ventura County, California, United States July 31, 2014 Details
July 05, 2014 Bixia Santa Clara County, California, United States July 30, 2014 Details
July 25, 2014 John Wilson Socorro County, New Mexico, United States July 27, 2014 Details
June 20, 2014 sagebird52 Albany County, Wyoming, United States June 25, 2014 Details
June 12, 2014 John Wilson Socorro County, New Mexico, United States June 15, 2014 Details
April 14, 2014 John Wilson Socorro County, New Mexico, United States April 21, 2014 Details
March 30, 2014 mmjdelgado Santa Barbara County, California, United States April 03, 2014 Details
January 26, 2014 Robert Gorman San Diego County, California, United States March 28, 2014 Details
September 28, 2013 rebeccafm San Diego County, California, United States October 04, 2013 Details
September 26, 2013 PDunwiddie San Bernardino County, California, United States September 28, 2013 Details
August 31, 2013 cowbug3 Humboldt County, California, United States September 24, 2013 Details
September 17, 2013 ShannonLevine Placer County, California, United States September 18, 2013 Details
July 06, 2013 azukoff Scott County, Kansas, United States July 10, 2013 Details
July 07, 2013 amyllamb San Francisco County, California, United States July 08, 2013 Details
June 23, 2013 azukoff Clark County, Kansas, United States July 01, 2013 Details
June 17, 2013 MAKI Santa Barbara County, California, United States June 24, 2013 Details
March 17, 2013 mudgrub12 Placer County, California, United States March 24, 2013 Details
June 16, 2012 J_Martineau Sheridan County, Wyoming, United States February 04, 2013 Details
September 25, 2012 Josiah Gilbert San Luis Obispo County, California, United States December 09, 2012 Details
July 21, 2012 Josiah Gilbert San Luis Obispo County, California, United States December 09, 2012 Details
October 16, 2012 Josiah Gilbert San Luis Obispo County, California, United States December 09, 2012 Details
November 20, 2012 Ken Davenport (Ken Davenport) Kern County, California, United States December 01, 2012 Details
September 26, 1978 legacy.reporter (George T. Austin) Clark County, Nevada, United States December 01, 2012 Details
May 12, 1978 legacy.reporter (George T. Austin) Clark County, Nevada, United States December 01, 2012 Details
May 23, 1978 legacy.reporter (George T. Austin) Clark County, Nevada, United States December 01, 2012 Details
June 01, 1978 legacy.reporter (George T. Austin) Clark County, Nevada, United States December 01, 2012 Details
July 03, 1978 legacy.reporter (George T. Austin) Clark County, Nevada, United States December 01, 2012 Details
July 21, 1978 legacy.reporter (George T. Austin) Clark County, Nevada, United States December 01, 2012 Details
August 04, 1978 legacy.reporter (George T. Austin) Clark County, Nevada, United States December 01, 2012 Details
October 29, 1978 legacy.reporter (George T. Austin) Clark County, Nevada, United States December 01, 2012 Details
March 31, 1977 legacy.reporter (C. S. Lawson) Clark County, Nevada, United States December 01, 2012 Details
July 04, 2012 gerryq Nez Perce County, Idaho, United States July 19, 2012 Details
February 17, 2012 Doug Taron Riverside County, California, United States March 21, 2012 Details
February 27, 2012 Michelle Sneck Mohave County, Arizona, United States March 10, 2012 Details
July 02, 2010 Josiah Gilbert San Luis Obispo County, California, United States February 23, 2012 Details
August 12, 2009 Josiah Gilbert San Luis Obispo County, California, United States February 20, 2012 Details
January 26, 2012 AKimages San Diego County, California, United States January 29, 2012 Details
August 14, 2011 J_Martineau Johnson County, Wyoming, United States December 17, 2011 Details
April 19, 2011 Kari Gila County, Arizona, United States October 06, 2011 Details
September 28, 2011 mudgrub12 Placer County, California, United States September 29, 2011 Details
May 21, 2011 Matt ODonnell Bernalillo County, New Mexico, United States August 08, 2011 Details
July 10, 2011 Renae Shasta County, California, United States July 15, 2011 Details
September 04, 1978 legacy.reporter (unknown) Yuba County, California, United States May 01, 2011 Details
March 28, 2011 Ken Davenport (Ken Davenport) Fresno County, California, United States May 01, 2011 Details