Problema byssus

Problema byssus
	Male
	Female
Conservation status
	; Apparently Secure (NatureServe)
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Lepidoptera
Family:	Hesperiidae
Genus:	Problema
Species:	P. byssus
Binomial name
	Problema byssus; (Edwards, 1880)
Synonyms
	Pamphila byssusEdwards, 1880; Limochroes byssus;

Last updated August 31, 2025

Problema byssus, the byssus skipper or bunchgrass skipper, is a butterfly of the family Hesperiidae. It is found along the Atlantic coastal plain of North America, from North Carolina south to Florida and the Gulf States and from northern Indiana west to Iowa and south to Missouri and Kansas.^[3]

Description

The Byssus Skipper is a medium-sized butterfly with a wingspan ranging from 3.7 to 4.6 cm. Its upper wings are bright yellow-orange bordered with black, giving the illusion of a central patch. The underside of the forewings maintains the yellow-orange hue, while the hindwings are dull yellow in males and rust-colored in females. A band of pale spots is typically visible on the hindwings.

The wingspan is 37–46 mm.

The larvae feed on Tripsacum dactyloides .

Lifecycle and Behaviour

eggs laid singly on host plant leaves
larvae feed on eastern gammagrass (Trypsacum dactyloides) and big bluestem (Andropogon gerardii) sheltering in silk-tied leaves
pupation occurs in leaf litter within silk cocoons
adult diet: nectar from various wildflowers, including pickerelweed
flight periods:
midwest - one brood from June to July southeast - two broods from May to September, occasionally extending into October

Distribution and Habitat

The species exhibits a disjunct distribution across three regions in North America:

Habitats include tallgrass prairies in the Midwest and moist grassy wetlands —e.g., marsh edges, wet pine savannas—along the Atlantic coast

Conservation Status

NatureServe ranks Problema byssus as G3–G4 (rare or locally threatened). At the state level, populations in Nebraska are considered critically imperiled (S1) . Conservation measures focus on preserving tallgrass prairie and wetland habitats with host-grass clumps and cautious use of fire .

Subspecies

References

↑ "NatureServe Explorer 2.0 Problema byssus Byssus Skipper". explorer.natureserve.org. Retrieved 3 October 2020.
↑ Problema, Site of Markku Savela
↑ Butterflies and Moths of North America collecting and sharing data about Lepidoptera

This Hesperiini-related article is a stub. You can help Wikipedia by expanding it.

This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.

[1] "NatureServe Explorer 2.0 Problema byssus Byssus Skipper". explorer.natureserve.org. Retrieved 3 October 2020.

[2] Problema, Site of Markku Savela

[3] Butterflies and Moths of North America collecting and sharing data about Lepidoptera

[1]

[2]

[3]