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.
Comments: NULL
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Verified Sightings
Displaying 1 - 24 of 83 verified sightings
Observation date: Aug 29, 2024
Submitted by: jrmbutterfly
Region: Alberta, Canada
Verified by: J_Martineau
Verified date: Dec 04, 2024
Observation date: Aug 22, 2023
Submitted by: Doug Backlund
Region: Harding County, South Dakota, United States
Verified by: J_Martineau
Verified date: Aug 25, 2023
Observation date: Aug 20, 2020
Submitted by: Ben Meredyk
Region: Billings County, North Dakota, United States
Verified by: stevekohler
Verified date: Sep 04, 2021
Observation date: Aug 21, 2018
Submitted by: storolaf
Region: Day County, South Dakota, United States
Verified by: J_Martineau
Verified date: Aug 28, 2018
Observation date: Aug 22, 2018
Submitted by: storolaf
Region: Roberts County, South Dakota, United States
Verified by: J_Martineau
Verified date: Aug 28, 2018
Observation date: unknown
Submitted by: BAMONA
Region:
Verified by: BAMONA
Verified date: Sep 06, 2010
Observation date: Aug 27, 2008
Submitted by: stevekohler (Steve Kohler)
Region: Carbon County, Montana, United States
Verified by: stevekohler (Steve Kohler)
Verified date: Mar 13, 2009
Observation date: Sep 24, 2008
Submitted by: stevekohler (Steve Kohler)
Region: Judith Basin County, Montana, United States
Verified by: stevekohler (Steve Kohler)
Verified date: Mar 13, 2009
Observation date: Sep 25, 2008
Submitted by: stevekohler (Steve Kohler)
Region: Fergus County, Montana, United States
Verified by: stevekohler (Steve Kohler)
Verified date: Mar 13, 2009
Observation date: Sep 24, 2008
Submitted by: stevekohler (Steve Kohler)
Region: Meagher County, Montana, United States
Verified by: stevekohler (Steve Kohler)
Verified date: Mar 13, 2009
Observation date: Sep 24, 2008
Submitted by: stevekohler (Steve Kohler)
Region: Musselshell County, Montana, United States
Verified by: stevekohler (Steve Kohler)
Verified date: Mar 13, 2009
Observation date: Sep 23, 2008
Submitted by: stevekohler (Steve Kohler)
Region: Broadwater County, Montana, United States
Verified by: stevekohler (Steve Kohler)
Verified date: Mar 13, 2009
Observation date: Oct 03, 2008
Submitted by: stevekohler (Steve Kohler)
Region: Stillwater County, Montana, United States
Verified by: stevekohler (Steve Kohler)
Verified date: Mar 13, 2009
Observation date: Sep 24, 2008
Submitted by: stevekohler (Steve Kohler)
Region: Wheatland County, Montana, United States
Verified by: stevekohler (Steve Kohler)
Verified date: Mar 13, 2009
Observation date: Sep 24, 2008
Submitted by: stevekohler (Steve Kohler)
Region: Golden Valley County, Montana, United States
Verified by: stevekohler (Steve Kohler)
Verified date: Mar 13, 2009
Observation date: unknown
Submitted by: legacy.reporter
Region: Toole County, Montana, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
Observation date: unknown
Submitted by: legacy.reporter
Region: Bowman County, North Dakota, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
Observation date: unknown
Submitted by: legacy.reporter
Region: Cascade County, Montana, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
Observation date: unknown
Submitted by: legacy.reporter
Region: McHenry County, North Dakota, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
Observation date: unknown
Submitted by: legacy.reporter
Region: Gallatin County, Montana, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
Observation date: unknown
Submitted by: legacy.reporter
Region: Richland County, North Dakota, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
Observation date: unknown
Submitted by: legacy.reporter
Region: McCone County, Montana, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
Observation date: unknown
Submitted by: legacy.reporter
Region: Pondera County, Montana, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
Observation date: unknown
Submitted by: legacy.reporter
Region: Wheatland County, Montana, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
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