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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Hesperia assiniboia - hespassi.jpg

Hesperia assiniboia - hespassi.jpg

The map below displays all BAMONA data for this species and has three different data layers:
1. All records (yellow dots)   2. Recently verified records (orange dots)*   3. US county records (purple)

There are also three base layers: 1. Satellite    2. Normal   3. Hybrid

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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
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