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Byssus Skipper (Problema byssus)


There is no overview information available for that species.

State status

Status and Natural Heritage Inventory documented occurrences in Wisconsin

The table below provides information about the protected status - both state and federal - and the rank (S and G Ranks) for Byssus Skipper (Problema byssus). See the Working List Key for more information about abbreviations. Counties shaded blue have documented occurrences for this species in the Wisconsin Natural Heritage Inventory database. The map is provided as a general reference of where occurrences of this species meet NHI data standards and is not meant as a comprehensive map of all observations.

Note: Species recently added to the NHI Working List may temporarily have blank occurrence maps.

Documented locations of Problema byssus in the Natural Heritage Inventory Database as of July 2015.
Summary Information
State StatusSC/N
Federal Status in Wisconsinnone
State RankS2S3
Global RankG3G4
Tracked by NHIY

Species guidance

Identification: A large skipper with a pale medial band on the hindwings below. Above the male veins are often lined with black and the female has little orange dorsally.

Habitat: Bluff prairie in Wisconsin. Found in both sand prairie and silt loam prairie in Illinois (Panzer).

Nectar Source: Nectaring on black-eyed susan in Grant Co.

Host Plant: Andropogon gerardi in Illinois. Uses eastern grama grass (Tripsacum dactyloides) in Missouri.

State Distribution: Collected once in Grant County.

Global Distribution: Found in IL and IA along major rivers, MO, KS, and IN. Another range extends along the coastal plain from TX to FL up to VA where the species inhabits coastal wetlands.

Status Comments: Very restricted distribution.

Phenology: Late June and July.

Life and Natural History: Branded skipper (Hesperiinae) larvae build shelters that are made of tied leaves or in the base of the hostplant from which they go out at night to feed. The byssus skippers overwinter as fourth stage larvae. Pupation occurs within a dense cocoon at the base of the hostplant.

Inventory, Monitoring and Research Needs: Foodplant is unknown for certain.



Byssus Skipper

Byssus Skipper, male below - Hardscrabble State Natural Area, Lafayette County.

Photo © Mike Reese.

Byssus Skipper

Byssus Skipper, male above - Hardscrabble State Natural Area, Lafayette County.

Photo © Mike Reese.

Last revised: Friday, June 01, 2018