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.
Please donate!
We depend on donations to keep Butterflies and Moths of North America freely available. We want to express our gratitude to all who showed their support by making a contribution this year. You can donate to support this project at any time.
Advertise with us!
Do you have a product or service that you think would interest BAMONA users? If you would like to advertise on this website, contact us by email, or use the contact form and select the "Advertising" category.
Verified Sightings
Displaying 169 - 192 of 976 verified sightings
Observation date: Feb 27, 2022
Submitted by: ezeemonee
Region: Santa Clara County, California, United States
Verified by: Ken Davenport
Verified date: Mar 27, 2022
Observation date: Mar 13, 2022
Submitted by: Seth Mueller
Region: Los Angeles County, California, United States
Verified by: Ken Davenport
Verified date: Mar 18, 2022
Observation date: Aug 08, 2021
Submitted by: stevecary
Region: Harding County, New Mexico, United States
Verified by: stevecary
Verified date: Mar 12, 2022
Observation date: Nov 07, 2021
Submitted by: bonfrey
Region: Socorro County, New Mexico, United States
Verified by: stevecary
Verified date: Mar 04, 2022
Observation date: Feb 16, 2022
Submitted by: ezeemonee
Region: Los Angeles County, California, United States
Verified by: Ken Davenport
Verified date: Mar 03, 2022
Observation date: Feb 19, 2022
Submitted by: Seth Mueller
Region: San Bernardino County, California, United States
Verified by: Ken Davenport
Verified date: Feb 27, 2022
Observation date: Feb 18, 2022
Submitted by: Seth Mueller
Region: San Bernardino County, California, United States
Verified by: Ken Davenport
Verified date: Feb 27, 2022
Observation date: Feb 25, 2022
Submitted by: mstanek
Region: Los Angeles County, California, United States
Verified by: Ken Davenport
Verified date: Feb 26, 2022
Observation date: Feb 20, 2022
Submitted by: mstanek
Region: Ventura County, California, United States
Verified by: Ken Davenport
Verified date: Feb 23, 2022
Observation date: Nov 27, 2021
Submitted by: Seth Mueller
Region: San Bernardino County, California, United States
Verified by: Ken Davenport
Verified date: Nov 27, 2021
Observation date: Aug 01, 2017
Submitted by: Mark Salvato
Region: Sierra County, California, United States
Verified by: Ken Davenport
Verified date: Nov 16, 2021
Observation date: May 16, 2020
Submitted by: megere
Region: Sacramento County, California, United States
Verified by: Ken Davenport
Verified date: Oct 27, 2021
Observation date: Sep 17, 2021
Submitted by: glennfine
Region: Siskiyou County, California, United States
Verified by: Ken Davenport
Verified date: Oct 13, 2021
Observation date: Sep 14, 2021
Submitted by: glennfine
Region: Siskiyou County, California, United States
Verified by: Ken Davenport
Verified date: Oct 13, 2021
Observation date: Sep 13, 2021
Submitted by: glennfine
Region: Siskiyou County, California, United States
Verified by: Ken Davenport
Verified date: Oct 13, 2021
Observation date: Jun 08, 2018
Submitted by: Mark Salvato
Region: San Benito County, California, United States
Verified by: Ken Davenport
Verified date: Oct 11, 2021
Observation date: Jul 05, 2021
Submitted by: mongoose
Region: Glacier County, Montana, United States
Verified by: J_Martineau
Verified date: Sep 07, 2021
Observation date: Jul 05, 2021
Submitted by: mongoose
Region: Glacier County, Montana, United States
Verified by: J_Martineau
Verified date: Sep 07, 2021
Observation date: Jul 12, 2021
Submitted by: mongoose
Region: Glacier County, Montana, United States
Verified by: J_Martineau
Verified date: Sep 07, 2021
Observation date: Aug 29, 2021
Submitted by: ezeemonee
Region: Santa Barbara County, California, United States
Verified by: Ken Davenport
Verified date: Aug 31, 2021
Observation date: Aug 09, 2021
Submitted by: MAKI
Region: Tehama County, California, United States
Verified by: Ken Davenport
Verified date: Aug 17, 2021
Observation date: Aug 10, 2021
Submitted by: MAKI
Region: Butte County, California, United States
Verified by: Ken Davenport
Verified date: Aug 17, 2021
Observation date: Aug 09, 2021
Submitted by: Luna-Linuche.76
Region: Curry County, Oregon, United States
Verified by: Ken Davenport
Verified date: Aug 11, 2021
Observation date: Aug 09, 2021
Submitted by: Luna-Linuche.76
Region: Curry County, Oregon, United States
Verified by: Ken Davenport
Verified date: Aug 11, 2021
- ‹ previous
- 8 of 41
- next ›