Attributes of Pyrgus centaureae

Grizzled Skipper
Pyrgus centaureae (Rambur, [1842])

Family: Hesperiidae
Subfamily: Pyrginae
Identification: Fringes are checkered. Upperside is gray-black with squarish white checks. Underside of hindwing is gray-brown to black checkered with whitish spots; veins are white. Male has a costal fold enclosing scent scales on the forewing.
Wing Span: 1 - 1 5/16 inches (2.5 - 3.3 cm).
Life History: Males patrol and occasionally perch all day in open areas in their search for receptive females. Eggs are deposited singly on leaves of the host plant. Caterpillars feed within shelters of webbed leaves.
Flight: One brood from March-May in the south, requires 2 years to develop in the subarctic.
Caterpillar Hosts: Wild strawberry (Fragaria virginiana), Canadian cinquefoil (Potentilla canadensis), varileaf cinquefoil (P. diversifolia), and cloudberry (Rubus chamaemorus); all in the rose family (Rosaceae).
Adult Food: Nectar from flowers of low-growing plants including blueberry, wild strawberry, and Canadian cinquefoil.
Habitat: Open areas near woods including valley bottoms, barrens, meadows, grassy hillsides, tundra, scrub oak openings.
Range: Holarctic. In North America, from Alaska south and east to central Ontario and northern Michigan. Isolated populations in Labrador and arctic Quebec, the central Appalachians, and the Rocky Mountains from central Alberta south to northern New Mexico.
Conservation: Populations on eastern shale barrens (subspecies wyandot) should be monitored and conserved.
NCGR: G5 - Demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery.
Management Needs: Determine management needs for subspecies wyandot and implement if necessary.
Taxonomy Notes:

Images of Pyrgus centaureae

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Pyrgus centaureae - pyrgus_centaureae_loki_egg_raisingbutterflies.jpg

Pyrgus centaureae - pyrgus_centaureae_loki_egg_raisingbutterflies.jpg
Pyrgus centaureae - pyrgus_centaureae_loki_caterpillar1_raisingbutterflies.jpg

Pyrgus centaureae - pyrgus_centaureae_loki_caterpillar1_raisingbutterflies.jpg
Pyrgus centaureae - pyrgus_centaureae_loki_caterpillar2_raisingbutterflies.jpg

Pyrgus centaureae - pyrgus_centaureae_loki_caterpillar2_raisingbutterflies.jpg
Pyrgus centaureae - pyrgus_centaureae_loki_caterpillar3_raisingbutterflies.jpg

Pyrgus centaureae - pyrgus_centaureae_loki_caterpillar3_raisingbutterflies.jpg





The map below displays all BAMONA data for this species and has three different data layers:
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*The orange dots on the map provide access to information about the 400 most recently verified sightings of this species. Sometimes, there are several records at the same location. Use the table view to access these records.

By default, the fifty most recently verified sightings are below. Sort by Observation Date to see the most recent sightings, or filter the sightings by region to get a regional list.

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Observation Date Submitter Region Verified Datesort icon
July 04, 2007 RaisingButterflies.org Daggett County, Utah, United States November 28, 2011 Details
July 24, 2008 RaisingButterflies.org Duchesne County, Utah, United States November 28, 2011 Details
July 20, 2011 jlboone@aol.com San Juan County, Colorado, United States August 06, 2011 Details
July 24, 1980 legacy.reporter (No collector) Big Horn County, Wyoming, United States October 29, 2008 Details
July 12, 1982 legacy.reporter (No collector) Johnson County, Wyoming, United States October 29, 2008 Details
July 26, 1983 legacy.reporter (S.J. Kohler) Carbon County, Montana, United States October 29, 2008 Details
July 04, 1987 legacy.reporter (R.A. & M.J. Rahn) Carbon County, Montana, United States October 29, 2008 Details
July 23, 1933 legacy.reporter (No collector) Larimer County, Colorado, United States October 29, 2008 Details
June 24, 1967 legacy.reporter (S.W. Gross) Boulder County, Colorado, United States October 29, 2008 Details
June 28, 1953 legacy.reporter (S.S. Nicolay) Chaffee County, Colorado, United States October 29, 2008 Details
July 09, 1955 legacy.reporter (S.S. Nicolay) Boulder County, Colorado, United States October 29, 2008 Details
June 22, 1955 legacy.reporter (S.S. Nicolay) Clear Creek County, Colorado, United States October 29, 2008 Details
July 16, 1949 legacy.reporter (D. Eff) Clear Creek County, Colorado, United States October 29, 2008 Details
July 19, 1949 legacy.reporter (D. Eff) Boulder County, Colorado, United States October 29, 2008 Details
July 02, 1953 legacy.reporter (S.S. Nicolay) San Juan County, Colorado, United States October 29, 2008 Details
July 16, 1985 legacy.reporter (No collector) Park County, Colorado, United States October 29, 2008 Details
June 28, 1941 legacy.reporter (R. Whitaker) Lake County, Colorado, United States October 29, 2008 Details
June 10, 1939 legacy.reporter (R. Whitaker) Park County, Colorado, United States October 29, 2008 Details
June 26, 1953 legacy.reporter (S.S. Nicolay) Park County, Colorado, United States October 29, 2008 Details
June 27, 1939 legacy.reporter (R. Whitaker) Jefferson County, Colorado, United States October 29, 2008 Details
May 26, 1935 legacy.reporter (W.S. McAlpine) Montmorency County, Michigan, United States October 29, 2008 Details
May 31, 1943 legacy.reporter (G. Rawson) Oscoda County, Michigan, United States October 29, 2008 Details
May 30, 1935 legacy.reporter (W.S. McAlpine) Montmorency County, Michigan, United States October 29, 2008 Details
June 02, 1942 legacy.reporter (G. Rawson) Oscoda County, Michigan, United States October 29, 2008 Details
January 01, 1950 legacy.reporter (W.F. Fiske) Polk County, North Carolina, United States October 29, 2008 Details
April 19, 1938 legacy.reporter (No collector) Hampshire County, West Virginia, United States October 29, 2008 Details
May 08, 1939 legacy.reporter (A.H. Clark) Hampshire County, West Virginia, United States October 29, 2008 Details
May 03, 1937 legacy.reporter (A.H. Clark) Fairfax County, Virginia, United States October 29, 2008 Details
May 12, 1898 legacy.reporter (No collector) Montgomery County, Virginia, United States October 29, 2008 Details
May 10, 1947 legacy.reporter (A.H. Clark) Augusta County, Virginia, United States October 29, 2008 Details
June 03, 1935 legacy.reporter (Sexton) Shenandoah County, Virginia, United States October 29, 2008 Details
April 24, 1980 legacy.reporter (D.B. Adelberg) Allegany County, Maryland, United States October 29, 2008 Details
April 22, 1976 legacy.reporter (R.S. Simmons) Allegany County, Maryland, United States October 29, 2008 Details
May 07, 1964 legacy.reporter (R.S. Simmons) Allegany County, Maryland, United States October 29, 2008 Details
May 05, 1960 legacy.reporter (R.S. Simmons) Allegany County, Maryland, United States October 29, 2008 Details
May 04, 1961 legacy.reporter (R.S. Simmons) Allegany County, Maryland, United States October 29, 2008 Details
May 06, 1965 legacy.reporter (R.S. Simmons) Allegany County, Maryland, United States October 29, 2008 Details
May 01, 1956 legacy.reporter (R.S. Simmons) Allegany County, Maryland, United States October 29, 2008 Details
May 01, 1966 legacy.reporter (R.S. Simmons) Allegany County, Maryland, United States October 29, 2008 Details
May 01, 1967 legacy.reporter (R.S. Simmons) Allegany County, Maryland, United States October 29, 2008 Details
May 04, 1974 legacy.reporter (L.J. Melton) Allegany County, Maryland, United States October 29, 2008 Details
May 01, 1958 legacy.reporter (R.S. Simmons) Allegany County, Maryland, United States October 29, 2008 Details
May 01, 1889 legacy.reporter (E.J. Shoemaker) Allegany County, District of Columbia, United States October 29, 2008 Details
May 21, 1999 legacy.reporter (W.D. Kearfott) Essex County, New Jersey, United States October 29, 2008 Details
May 07, 1999 legacy.reporter (W.D. Kearfott) Essex County, New Jersey, United States October 29, 2008 Details
May 05, 1907 legacy.reporter (E.J. Shoemaker) Passaic County, New Jersey, United States October 29, 2008 Details
January 01, 1950 legacy.reporter Passaic County, New Jersey, United States October 29, 2008 Details
May 07, 1939 legacy.reporter (O. Buchholz) Morris County, New Jersey, United States October 29, 2008 Details
January 01, 1950 legacy.reporter Passaic County, New Jersey, United States October 29, 2008 Details
July 15, 2004 stevekohler (Steve Kohler) Granite County, Montana, United States January 23, 2008 Details