Links
- Document: Report (8.6 MB pdf) , HTML , XML
- Appendix: Downloadable appendix files
- Download citation as: RIS | Dublin Core
Abstract
The U.S. Fish and Wildlife Service has designated the Pyrgus centaureae wyandot (Appalachian Grizzled Skipper [AGS]) to be at-risk, based on its declining populations and the lack of information on its status. The objective of this study was to complete range-wide surveys to locate extant AGS colonies and to quantify the number of AGS observed at each location. From 2021–24, 284 surveys were done in 25 unique (that is, distinct) counties in 8 States in the Eastern United States — Maryland, Michigan, New York, North Carolina, Ohio, Pennsylvania, Virginia, and West Virginia. We found AGS in only two counties: Alleghany County, Virginia, and Greenbrier County, West Virginia. AGS were observed 180 times in these two counties. Our results can inform U.S. Fish and Wildlife decisions about where and how future AGS conservation efforts can be implemented.
Suggested Citation
Vyas, N.B., Selfridge, J., Cuthrell, D., Somes, R., White, E., Ratcliffe, J., Lynch, J., Hamon, L., Wyza, E., Leppo, B., Woods, P., Tur, A., Drummey, D., Nolan, K., Orcutt, E., Rapp, A., Card, L., Goldner, J., and Olcott, S., 2026, Range-wide relative abundance of the Appalachian grizzled skipper (Pyrgus centaureae wyandot) in the Eastern United States: U.S. Geological Survey Open-File Report 2026–1017, 57 p., https://doi.org/10.3133/ofr20261017.
ISSN: 2331-1258 (online)
Study Area
Table of Contents
- Introduction
- Objectives
- Methods
- Results
- State Summaries
- Discussion
- Conclusion
- References Cited
- Appendix 1. Guidelines and Data Sheets
- Appendix 2. Other Butterfly Species Observed During Surveys, by State
- Appendix 3. Master Data Spreadsheet (Redacted)
- Appendix 4. Maryland Data (Redacted)
- Appendix 5. Michigan Data (Redacted)
- Appendix 6. New York Data (Redacted)
- Appendix 7. North Carolina Data (Redacted)
- Appendix 8. Ohio Data (Redacted)
- Appendix 9. Pennsylvania Data (Redacted)
- Appendix 10. Virginia Data (Redacted)
- Appendix 11. West Virginia Data (Redacted)
- Appendix 12. Presentations and Reports Submitted by States (Redacted)
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Range-wide relative abundance of the Appalachian grizzled skipper (Pyrgus centaureae wyandot) in the Eastern United States |
| Series title | Open-File Report |
| Series number | 2026-1017 |
| DOI | 10.3133/ofr20261017 |
| Publication Date | May 28, 2026 |
| Year Published | 2026 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Publisher location | Reston, VA |
| Contributing office(s) | Eastern Ecological Science Center |
| Description | Report: ix, 57 p.; Appendix |
| Country | United States |
| State | Maryland, Michigan, New York, North Carolina, Ohio, Pennsylvania, Virginia, West Virginia |
| Online Only (Y/N) | Y |