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 200 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.
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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 13, 2012 | SwingDancer | Loudoun County, Virginia, United States | May 16, 2012 | Details |
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April 16, 2012 | Nancy Weiss | Virginia, United States, Warren County | May 16, 2012 | Details |
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April 14, 2012 | AJ Trently | Maury County, Tennessee, United States | April 29, 2012 | Details |
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April 06, 2012 | Melinda Fawver | Loudon County, Tennessee, United States | April 29, 2012 | Details |
| April 13, 2012 | HHowell | Hancock County, Tennessee, United States | April 27, 2012 | Details | |
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April 20, 2012 | Cheryl Jennings | Hardy County, West Virginia, United States | April 26, 2012 | Details |
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April 20, 2012 | Cheryl Jennings | Grant County, West Virginia, United States | April 26, 2012 | Details |
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April 14, 2012 | Cheryl Jennings | Mineral County, West Virginia, United States | April 16, 2012 | Details |
| March 29, 2012 | linda-butterfly | Pike County, Georgia, United States | April 10, 2012 | Details | |
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July 31, 2011 | Doug Taron | Pima County, Arizona, United States | April 10, 2012 | Details |
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March 30, 2012 | Steve Craig | Barry County, Missouri, United States | April 03, 2012 | Details |
| March 27, 2012 | HHowell | Claiborne County, Tennessee, United States | April 03, 2012 | Details | |
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June 21, 2011 | coreyk | Clark County, Nevada, United States | January 31, 2012 | Details |
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June 15, 2011 | Appy-Brown | Grand Isle County, Vermont, United States | December 23, 2011 | Details |
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June 19, 2011 | Appy-Brown | Grand Isle County, Vermont, United States | December 23, 2011 | Details |
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June 20, 2011 | Appy-Brown | Grand Isle County, Vermont, United States | December 23, 2011 | Details |
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June 20, 2011 | Appy-Brown | Grand Isle County, Vermont, United States | December 23, 2011 | Details |
| May 31, 2008 | RaisingButterflies.org | Tooele County, Utah, United States | November 26, 2011 | Details | |
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July 09, 2011 | Joe Schelling--entered by M ODonnell | Bernalillo County, New Mexico, United States | September 26, 2011 | Details |
| July 21, 2011 | mgiffen | Modoc County, California, United States | September 15, 2011 | Details | |
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August 14, 2011 | Doug Bruce | Giles County, Tennessee, United States | August 16, 2011 | Details |
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April 22, 2011 | Matt ODonnell | Bernalillo County, New Mexico, United States | August 08, 2011 | Details |
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May 04, 2010 | Howell Curtis | Crawford County, Indiana, United States | August 02, 2011 | Details |
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May 08, 2011 | aahewetson | Irion County, Texas, United States | July 15, 2011 | Details |
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June 13, 2003 | cyric | Garfield County, Colorado, United States | July 14, 2011 | Details |
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July 04, 2011 | David Trently | Knox County, Tennessee, United States | July 07, 2011 | Details |
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August 29, 2010 | henryr10 | Hamilton County, Ohio, United States | July 02, 2011 | Details |
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April 13, 2011 | Andy Eller | Marshall County, Kentucky, United States | June 15, 2011 | Details |
| March 19, 2011 | vitaly charny (Vitaly Charny) | Lawrence County, Alabama, United States | May 31, 2011 | Details | |
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April 21, 2011 | Tommie Rogers | Hamilton County, Tennessee, United States | May 21, 2011 | Details |
| July 18, 2007 | legacy.reporter (Jeff Pippin) | Inyo County, California, United States | May 01, 2011 | Details | |
| July 09, 2008 | legacy.reporter (John Lane) | Lassen County, California, United States | May 01, 2011 | Details | |
| June 12, 2008 | legacy.reporter (John Lane) | Modoc County, California, United States | May 01, 2011 | Details | |
| March 16, 2010 | legacy.reporter (Kim Davis & Mike Stangeland) | San Diego County, California, United States | May 01, 2011 | Details | |
| March 04, 1994 | legacy.reporter (Douglas Aguillard) | San Diego County, California, United States | May 01, 2011 | Details | |
| April 07, 1974 | legacy.reporter (Jim Brock) | San Bernardino County, California, United States | May 01, 2011 | Details | |
| April 05, 1977 | legacy.reporter (Jim Brock) | San Bernardino County, California, United States | May 01, 2011 | Details | |
| April 20, 2010 | legacy.reporter (Jim Brock) | San Bernardino County, California, United States | May 01, 2011 | Details | |
| June 22, 1996 | legacy.reporter (unknown) | San Bernardino County, California, United States | May 01, 2011 | Details | |
| June 22, 1979 | legacy.reporter (unknown) | San Bernardino County, California, United States | May 01, 2011 | Details | |
| June 25, 1994 | legacy.reporter (unknown) | Tulare County, California, United States | May 01, 2011 | Details | |
| June 13, 2002 | legacy.reporter (Hoag, David) | Grand Isle County, Vermont, United States | May 01, 2011 | Details | |
| August 02, 2003 | legacy.reporter (Pfeiffer, Bryan) | Rutland County, Vermont, United States | May 01, 2011 | Details | |
| April 30, 2004 | legacy.reporter (Pfeiffer, Bryan) | Rutland County, Vermont, United States | May 01, 2011 | Details | |
| June 08, 2002 | legacy.reporter (Schneider, Jerry) | Grand Isle County, Vermont, United States | May 01, 2011 | Details | |
| June 29, 2003 | legacy.reporter (Gifford, Charles) | Grand Isle County, Vermont, United States | May 01, 2011 | Details | |
| June 29, 2003 | legacy.reporter (Gifford, Charles) | Grand Isle County, Vermont, United States | May 01, 2011 | Details | |
| June 25, 2003 | legacy.reporter (Gifford, Charles) | Grand Isle County, Vermont, United States | May 01, 2011 | Details | |
| May 27, 2002 | legacy.reporter (Hoag, David) | Grand Isle County, Vermont, United States | May 01, 2011 | Details | |
| June 01, 2002 | legacy.reporter (Hoag, David) | Grand Isle County, Vermont, United States | May 01, 2011 | Details |











