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 337 - 360 of 976 verified sightings
Observation date: Sep 27, 2016
Submitted by: Team Kweeper
Region: Sacramento County, California, United States
Verified by: Ken Davenport
Verified date: Aug 11, 2018
Observation date: Aug 07, 2018
Submitted by: Lisahug
Region: Sonoma County, California, United States
Verified by: Ken Davenport
Verified date: Aug 08, 2018
Observation date: Jul 24, 2018
Submitted by: Cactuswren1976
Region: Santa Fe County, New Mexico, United States
Verified by: stevecary
Verified date: Aug 07, 2018
Observation date: Aug 06, 2018
Submitted by: Lisahug
Region: Sonoma County, California, United States
Verified by: Ken Davenport
Verified date: Aug 06, 2018
Observation date: Jul 30, 2018
Submitted by: Jebflutterby
Region: Santa Cruz County, California, United States
Verified by: Ken Davenport
Verified date: Aug 04, 2018
Observation date: Sep 26, 2017
Submitted by: Team Kweeper
Region: Mariposa County, California, United States
Verified by: Ken Davenport
Verified date: Jul 31, 2018
Observation date: Jul 13, 2018
Submitted by: splatzone
Region: San Diego County, California, United States
Verified by: Ken Davenport
Verified date: Jul 17, 2018
Observation date: Jul 15, 2018
Submitted by: glennfine
Region: Siskiyou County, California, United States
Verified by: Ken Davenport
Verified date: Jul 15, 2018
Observation date: Jul 05, 2018
Submitted by: dsperanza
Region: Montana, United States
Verified by: J_Martineau
Verified date: Jul 09, 2018
Observation date: Jun 21, 2018
Submitted by: Phil Warren
Region: Sonoma County, California, United States
Verified by: Ken Davenport
Verified date: Jun 25, 2018
Observation date: Jun 06, 2018
Submitted by: Lisahug
Region: Sonoma County, California, United States
Verified by: Ken Davenport
Verified date: Jun 07, 2018
Observation date: Jun 03, 2018
Submitted by: Lisahug
Region: Sonoma County, California, United States
Verified by: Ken Davenport
Verified date: Jun 06, 2018
Observation date: May 27, 2018
Submitted by: J. Tiehm
Region: Modoc County, California, United States
Verified by: Ken Davenport
Verified date: Jun 01, 2018
Observation date: May 21, 2018
Submitted by: hiker96
Region: Kittitas County, Washington, United States
Verified by: CA Ivy
Verified date: May 31, 2018
Observation date: May 29, 2018
Submitted by: Lisahug
Region: Sonoma County, California, United States
Verified by: Ken Davenport
Verified date: May 30, 2018
Observation date: May 19, 2018
Submitted by: Robert Gorman
Region: San Diego County, California, United States
Verified by: Ken Davenport
Verified date: May 24, 2018
Observation date: May 18, 2018
Submitted by: ezeemonee
Region: Los Angeles County, California, United States
Verified by: Ken Davenport
Verified date: May 20, 2018
Observation date: Feb 27, 2016
Submitted by: janeyd
Region: Santa Barbara County, California, United States
Verified by: Ken Davenport
Verified date: May 14, 2018
Observation date: May 04, 2018
Submitted by: Lisahug
Region: Sonoma County, California, United States
Verified by: Ken Davenport
Verified date: May 05, 2018
Observation date: Apr 27, 2018
Submitted by: Jim and Debby
Region: Lassen County, California, United States
Verified by: Ken Davenport
Verified date: May 05, 2018
Observation date: Apr 24, 2018
Submitted by: MAKI
Region: Los Angeles County, California, United States
Verified by: Ken Davenport
Verified date: Apr 26, 2018
Observation date: Apr 11, 2018
Submitted by: ezeemonee
Region: Santa Barbara County, California, United States
Verified by: Ken Davenport
Verified date: Apr 12, 2018
Observation date: Mar 31, 2018
Submitted by: ezeemonee
Region: Monterey County, California, United States
Verified by: Ken Davenport
Verified date: Apr 02, 2018
Observation date: Mar 31, 2018
Submitted by: ezeemonee
Region: Monterey County, California, United States
Verified by: Ken Davenport
Verified date: Apr 02, 2018
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