National Moth Week is July 18-26!
Moths are amazing creatures. Take photographs and share your moth sightings with us to document the moths where you live.
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.
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Verified Sightings
Displaying 313 - 336 of 976 verified sightings
Observation date: May 03, 2019
Submitted by: Cactuswren1976
Region: Santa Fe County, New Mexico, United States
Verified by: stevecary
Verified date: May 23, 2019
Observation date: May 17, 2019
Submitted by: XplorMor Intern...
Region: Ventura County, California, United States
Verified by: Ken Davenport
Verified date: May 21, 2019
Observation date: May 09, 2019
Submitted by: XplorMor Intern...
Region: Ventura County, California, United States
Verified by: Ken Davenport
Verified date: May 14, 2019
Observation date: Feb 26, 2019
Submitted by: ezeemonee
Region: Los Angeles County, California, United States
Verified by: Ken Davenport
Verified date: Mar 31, 2019
Observation date: Mar 26, 2019
Submitted by: ezeemonee
Region: Los Angeles County, California, United States
Verified by: Ken Davenport
Verified date: Mar 31, 2019
Observation date: Mar 24, 2019
Submitted by: MAKI
Region: Ventura County, California, United States
Verified by: Ken Davenport
Verified date: Mar 25, 2019
Observation date: Mar 17, 2019
Submitted by: MAKI
Region: San Bernardino County, California, United States
Verified by: Ken Davenport
Verified date: Mar 20, 2019
Observation date: Mar 18, 2019
Submitted by: ezeemonee
Region: Ventura County, California, United States
Verified by: Ken Davenport
Verified date: Mar 19, 2019
Observation date: Jun 21, 2006
Submitted by: hydapse
Region: Carbon County, Montana, United States
Verified by: J_Martineau
Verified date: Feb 04, 2019
Observation date: Oct 10, 2018
Submitted by: treichard
Region: Los Angeles County, California, United States
Verified by: Ken Davenport
Verified date: Nov 17, 2018
Observation date: Oct 10, 2018
Submitted by: treichard
Region: Los Angeles County, California, United States
Verified by: Ken Davenport
Verified date: Nov 17, 2018
Observation date: Aug 30, 2018
Submitted by: treichard
Region: Los Angeles County, California, United States
Verified by: Ken Davenport
Verified date: Oct 08, 2018
Observation date: Aug 30, 2018
Submitted by: treichard
Region: Los Angeles County, California, United States
Verified by: Ken Davenport
Verified date: Oct 08, 2018
Observation date: Oct 05, 2018
Submitted by: Breck Breckenridge
Region: San Joaquin County, California, United States
Verified by: Ken Davenport
Verified date: Oct 06, 2018
Observation date: Oct 05, 2018
Submitted by: Breck Breckenridge
Region: San Joaquin County, California, United States
Verified by: Ken Davenport
Verified date: Oct 06, 2018
Observation date: Sep 27, 2018
Submitted by: Breck Breckenridge
Region: San Joaquin County, California, United States
Verified by: Ken Davenport
Verified date: Oct 02, 2018
Observation date: Sep 08, 2018
Submitted by: dharlette
Region: San Mateo County, California, United States
Verified by: Ken Davenport
Verified date: Oct 01, 2018
Observation date: Sep 10, 2018
Submitted by: Jebflutterby
Region: Santa Cruz County, California, United States
Verified by: Ken Davenport
Verified date: Sep 20, 2018
Observation date: Aug 31, 2018
Submitted by: satchmo0802
Region: Mariposa County, California, United States
Verified by: Ken Davenport
Verified date: Sep 09, 2018
Observation date: Aug 27, 2018
Submitted by: satchmo0802
Region: Marin County, California, United States
Verified by: Ken Davenport
Verified date: Sep 09, 2018
Observation date: Aug 22, 2018
Submitted by: Bilderbeck
Region: Marion County, Oregon, United States
Verified by: Ken Davenport
Verified date: Aug 24, 2018
Observation date: Oct 09, 2015
Submitted by: Mark Ekker
Region: Tuolumne County, California, United States
Verified by: Ken Davenport
Verified date: Aug 21, 2018
Observation date: Aug 10, 2018
Submitted by: Cactuswren1976
Region: Santa Fe County, New Mexico, United States
Verified by: stevecary
Verified date: Aug 13, 2018
Observation date: Oct 07, 2016
Submitted by: Team Kweeper
Region: Sacramento County, California, United States
Verified by: Ken Davenport
Verified date: Aug 11, 2018
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