Attributes of Hesperia assiniboia
Plains Skipper
Hesperia assiniboia (Lyman, 1892)
Family: Hesperiidae
Subfamily: Hesperiinae
Identification: Antennae relatively long. Wing fringes white or pale. Upperside with tawny areas reduced giving dark appearance. On underside of hindwing chevron of small separate white or yellowish spots, often grouped. Spots sometimes absent.
Wing Span: 13/16 - 1 1/4 inches (2.1 - 3.0 cm).
Life History: To await receptive females, males perch near the host plant or on ridges. Females scatter eggs on or near the host; caterpillars eat leaves and live in nests of tied leaves. Eggs overwinter.
Flight: One flight from late June to early September.
Caterpillar Hosts: Various grasses and possibly sedges.
Adult Food: Nectar from many flowers including asters, goldenrods, and blazing star.
Habitat: Native short- or mid-grass prairies and aspen parkland.
Range: Southern Canadian prairie provinces and northern plains states.
Conservation: Not usually required.
NCGR: G5 - Demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery.
Management Needs: None reported.
Taxonomy Notes:
Images of Hesperia assiniboia
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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.
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The fifty most recently verified sightings are below. See more recently verified sightings of all species.
| Observation Date | Submitter | Region |
Verified Date |
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|---|---|---|---|---|---|
| September 23, 2008 | stevekohler (Steve Kohler) | Broadwater County, Montana, United States | March 13, 2009 | Details | |
| August 27, 2008 | stevekohler (Steve Kohler) | Carbon County, Montana, United States | March 13, 2009 | Details | |
| September 24, 2008 | stevekohler (Steve Kohler) | Meagher County, Montana, United States | March 13, 2009 | Details | |
| September 24, 2008 | stevekohler (Steve Kohler) | Wheatland County, Montana, United States | March 13, 2009 | Details | |
| September 24, 2008 | stevekohler (Steve Kohler) | Judith Basin County, Montana, United States | March 13, 2009 | Details | |
| September 24, 2008 | stevekohler (Steve Kohler) | Musselshell County, Montana, United States | March 13, 2009 | Details | |
| September 24, 2008 | stevekohler (Steve Kohler) | Golden Valley County, Montana, United States | March 13, 2009 | Details | |
| September 25, 2008 | stevekohler (Steve Kohler) | Fergus County, Montana, United States | March 13, 2009 | Details | |
| October 03, 2008 | stevekohler (Steve Kohler) | Stillwater County, Montana, United States | March 13, 2009 | Details | |
| January 01, 1950 | legacy.reporter | Big Horn County, Montana, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Blaine County, Montana, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Broadwater County, Montana, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Carbon County, Montana, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Carter County, Montana, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Cascade County, Montana, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Chouteau County, Montana, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Custer County, Montana, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Daniels County, Montana, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Dawson County, Montana, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Fallon County, Montana, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Fergus County, Montana, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Flathead County, Montana, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Gallatin County, Montana, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Garfield County, Montana, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Glacier County, Montana, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Golden Valley County, Montana, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Hill County, Montana, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Jefferson County, Montana, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Lake County, Montana, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Lewis And Clark County, Montana, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | McCone County, Montana, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Meagher County, Montana, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Meagher County, Montana, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Missoula County, Montana, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Musselshell County, Montana, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Park County, Montana, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Petroleum County, Montana, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Phillips County, Montana, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Pondera County, Montana, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Powder River County, Montana, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Powell County, Montana, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Prairie County, Montana, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Rosebud County, Montana, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Stillwater County, Montana, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Sweet Grass County, Montana, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Teton County, Montana, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Toole County, Montana, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Treasure County, Montana, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Valley County, Montana, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Wheatland County, Montana, United States | December 31, 2004 | Details |
