Problema byssus

(Edwards, 1886)

Byssus Skipper, bunchgrass skipper

Problema byssus, commonly known as the Byssus or bunchgrass skipper, is a -sized in the . The exhibits a disjunct distribution across three North regions: the Atlantic coastal plain, the Midwestern tallgrass prairie, and localized prairie fragments. Its feed on specific grasses, particularly eastern gamagrass and big bluestem. The species is of concern, ranked as G3–G4 (rare or locally threatened) by NatureServe, with critically imperiled in Nebraska.

Problema byssus P1440073a by xpda. Used under a CC BY-SA 4.0 license.Problema byssus P1440069a by xpda. Used under a CC BY-SA 4.0 license.Problema byssus P1440074a by xpda. Used under a CC BY-SA 4.0 license.

Pronunciation

How to pronounce Problema byssus: /ˈproʊblɛmə ˈbɪsəs/

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Identification

Distinguished from similar by the combination of bright -orange upper with black borders, and the of pale spots on the . The in hindwing underside coloration—dull yellow in males versus rust-colored in females—provides a useful identification cue. The ' strong association with tallgrass prairie and wetland also aids in field identification.

Images

Habitat

Tallgrass prairies in the Midwest; moist grassy wetlands including marsh edges and wet pine savannas along the Atlantic coastal plain. require -grass clumps for larval development.

Distribution

Disjunct distribution across three North regions: Atlantic coastal plain from North Carolina south through Florida and Gulf states; Midwestern tallgrass prairie from northern Indiana to Iowa, Missouri, and Kansas; and localized prairie fragments such as southeastern Nebraska.

Seasonality

Midwest: one from June to July. Southeast: two broods from May to September, occasionally extending into October.

Diet

feed on eastern gamagrass (Tripsacum dactyloides) and big bluestem (Andropogon gerardii). nectar from various wildflowers, including pickerelweed.

Host Associations

  • Tripsacum dactyloides - larval eastern gamagrass
  • Andropogon gerardii - larval big bluestem

Life Cycle

laid singly on leaves. feed on host grasses while sheltering in -tied leaves. occurs in leaf litter within silk . emerge to feed on nectar and reproduce. One per year in the Midwest, two broods in the Southeast.

Behavior

construct shelters by tying leaves together. are active during daylight hours and visit flowers for nectar.

Ecological Role

of wildflowers through nectar-feeding. Larval of prairie grasses. Component of tallgrass prairie and wetland .

Human Relevance

Subject to efforts focused on preserving tallgrass prairie and wetland . in Nebraska are critically imperiled (S1). Fire management must be used cautiously to protect -grass clumps. Not known to be an agricultural pest or in managed systems.

Similar Taxa

  • Other Hesperiidae skippersSimilar general and pattern; distinguished by specific coloration pattern and association

More Details

Conservation Status

NatureServe ranks Problema byssus as G3–G4 (rare or locally threatened). Nebraska are critically imperiled (S1). measures emphasize preservation and cautious fire management.

Subspecies

Two recognized : Problema byssus byssus and Problema byssus kumskaka (Scudder, 1887).

Tags

Sources and further reading