Attributes of Callophrys gryneus
Juniper Hairstreak
Callophrys gryneus (Hübner, [1819])
Family: Lycaenidae
Subfamily: Theclinae
Identification: Widespread and variable. Western and eastern populations were once considered separate species but have been found to hybridize. Western: Upperside of male dull red-brown, female tawny; both with dark brown costa and wing borders. Underside of forewing rust-red; hindwing dull to bright green with irregular white line edged inwardly with red-brown. Eastern: Upperside of male dark brown with olive-colored sheen, female blackish brown. Underside green; forewing with tawny base, hindwing with 2 white spots near base and irregular white line edged inwardly with red-brown.
Wing Span: 1 - 1 1/4 inches (2.6 - 3.2 cm).
Life History: To seek females, males perch on host trees all day. Eggs are laid singly on tips of host plant leaves, which the caterpillars eat. Chrysalids hibernate.
Flight: In the north, one brood from May-August; in the west, one brood from March-July. Two broods in the south from February-September.
Caterpillar Hosts: Redcedar scopulorum), California juniper (J. californica), Utah juniper (J. osteosperma), and perhaps others.
Adult Food: Nectar from various flowers including winter cress, dogbane, common milkweed, wild carrot, shepherd's needle, butterflyweed, white sweet clover, and others.
Habitat: Old fields, bluffs, barrens, juniper and pinyon-juniper woodlands, and cedar breaks.
Range: East Texas. West: Montana, North Dakota, and Nebraska south to southern California, Arizona, New Mexico, and Baja California.
Conservation: Subspecies sweadneri is of conservation concern wherever it is found. Callophrys gryneus as a whole has The Nature Conservancy Global Rank of G5 - Demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery. Subspecies siva and loki have The Nature Conservancy rank of T4 - Apparently secure globally, though it might be quite rare in parts of its range, especially at the periphery. Subspecies sweadneri in Florida has The Nature Conservancy rank of T2 - Imperiled globally because of rarity (6 to 20 occurrences), or because of other factors demonstrably making it very vulnerable to extinction throughout its range. (Endangered throughout its range).
NCGR:
Management Needs: Maintain habitat of subspecies sweadneri and manage for the proper successional stage.
Taxonomy Notes:
The map below displays all verified sighting records in the BAMONA database for this species. Each record is indicated with a yellow dot. The orange dots on the map provide access to information about the 400 most recently verified sightings of this species. In some instances, there are several records at the same location. Use the table view to access these records.
Instructions: Click on the map and move your mouse to pan.
Zoom by using the plus [+] and minus [-] on the left side of the map.
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The fifty most recently verified sightings are below. See more recently verified sightings of all species.
| Observation Date | Submitter | Region |
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| April 23, 2013 | Joshua Spence | Murray County, Georgia, United States | May 13, 2013 | Details | |
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May 01, 2013 | JimConrad | Texas, United States, Uvalde County | May 02, 2013 | Details |
| May 01, 2013 | CA Ivy | Sebastian County, Arkansas, United States | May 02, 2013 | Details | |
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April 24, 2013 | jwilkinson | Howard County, Maryland, United States | April 30, 2013 | Details |
| April 30, 2013 | CA Ivy | Sebastian County, Arkansas, United States | April 30, 2013 | Details | |
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April 27, 2013 | wvbirder | Jefferson County, West Virginia, United States | April 28, 2013 | Details |
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April 15, 2013 | HHowell | Hardin County, Tennessee, United States | April 25, 2013 | Details |
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April 29, 2012 | Schrene | Saline County, Kansas, United States | April 05, 2013 | Details |
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July 07, 2012 | tjantscher | Allamakee County, Iowa, United States | February 03, 2013 | Details |
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July 16, 2012 | Chip Krilowicz | Cape May County, New Jersey, United States | January 12, 2013 | Details |
| June 25, 1982 | legacy.reporter (Oakley Shields) | Churchill County, Nevada, United States | December 01, 2012 | Details | |
| September 02, 1983 | legacy.reporter (George T. Austin) | Clark County, Nevada, United States | December 01, 2012 | Details | |
| July 03, 1987 | legacy.reporter (J Mori-O Shields-R Wells) | White Pine County, Nevada, United States | December 01, 2012 | Details | |
| July 20, 1995 | legacy.reporter (Robert L. Langston) | Humboldt County, Nevada, United States | December 01, 2012 | Details | |
| July 23, 1996 | legacy.reporter (John B. Vernon) | Elko County, Nevada, United States | December 01, 2012 | Details | |
| March 06, 2012 | vitaly charny (Vitaly Charny) | Perry County, Alabama, United States | December 01, 2012 | Details | |
| March 14, 2012 | legacy.reporter (Sara Bright) | Jefferson County, Alabama, United States | December 01, 2012 | Details | |
| April 08, 1979 | legacy.reporter (George T. Austin) | Clark County, Nevada, United States | December 01, 2012 | Details | |
| May 20, 1979 | legacy.reporter (George T. Austin) | Clark County, Nevada, United States | December 01, 2012 | Details | |
| April 15, 1979 | legacy.reporter (George T. Austin) | Clark County, Nevada, United States | December 01, 2012 | Details | |
| April 16, 1977 | legacy.reporter (George T. Austin) | Clark County, Nevada, United States | December 01, 2012 | Details | |
| April 24, 1977 | legacy.reporter (George T. Austin) | Clark County, Nevada, United States | December 01, 2012 | Details | |
| June 22, 1977 | legacy.reporter (George T. Austin) | Clark County, Nevada, United States | December 01, 2012 | Details | |
| June 05, 1979 | legacy.reporter (George T. Austin) | Clark County, Nevada, United States | December 01, 2012 | Details | |
| May 02, 1977 | legacy.reporter (George T. Austin) | Clark County, Nevada, United States | December 01, 2012 | Details | |
| June 02, 1977 | legacy.reporter (George T. Austin) | Clark County, Nevada, United States | December 01, 2012 | Details | |
| June 14, 1977 | legacy.reporter (George T. Austin) | Clark County, Nevada, United States | December 01, 2012 | Details | |
| June 14, 1977 | legacy.reporter (George T. Austin) | Clark County, Nevada, United States | December 01, 2012 | Details | |
| June 22, 1977 | legacy.reporter (George T. Austin) | Clark County, Nevada, United States | December 01, 2012 | Details | |
| June 23, 1977 | legacy.reporter (George T. Austin) | Clark County, Nevada, United States | December 01, 2012 | Details | |
| July 20, 1977 | legacy.reporter (George T. Austin) | Clark County, Nevada, United States | December 01, 2012 | Details | |
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July 06, 2012 | jrfleullan | Jones County, Georgia, United States | November 27, 2012 | Details |
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May 24, 2012 | fishwings | Person County, North Carolina, United States | October 31, 2012 | Details |
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March 16, 2012 | naturecoastnaturalist | Levy County, Florida, United States | September 11, 2012 | Details |
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August 28, 2012 | JimConrad | Texas, United States, Uvalde County | September 10, 2012 | Details |
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August 25, 2012 | dspicer | McMinn County, Tennessee, United States | August 28, 2012 | Details |
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August 04, 2012 | Doug Bruce | Perry County, Tennessee, United States | August 08, 2012 | Details |
| July 29, 2012 | Doug Bruce | Jackson County, Tennessee, United States | July 31, 2012 | Details | |
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April 24, 2012 | fragglecat | Comal County, Texas, United States | July 26, 2012 | Details |
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July 08, 2012 | Jdammarell | Spokane County, Washington, United States | July 09, 2012 | Details |
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June 24, 2012 | Tawnyam | Jo Daviess County, Illinois, United States | July 07, 2012 | Details |
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June 15, 2012 | mathgeek | Jackson County, Illinois, United States | July 07, 2012 | Details |
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June 25, 2012 | Jdammarell | Pend Oreille County, Washington, United States | July 04, 2012 | Details |
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July 01, 2012 | Doug Bruce | Jefferson County, Tennessee, United States | July 02, 2012 | Details |
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March 09, 2012 | keenabm | Logan County, Arkansas, United States | June 30, 2012 | Details |
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June 05, 2012 | Appy-Brown | Grand Isle County, Vermont, United States | June 08, 2012 | Details |
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June 06, 2012 | Appy-Brown | Grand Isle County, Vermont, United States | June 08, 2012 | Details |
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June 05, 2012 | AJ Trently | Lewis County, Tennessee, United States | June 07, 2012 | Details |
| April 09, 2012 | Tommie Rogers | Marion County, Tennessee, United States | June 04, 2012 | Details | |
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May 26, 2012 | BillBradford | Wheeler County, Oregon, United States | May 31, 2012 | Details |












