NEW RECORDS, ZOOGEOGRAPHIC NOTES, AND A REVISED CHECKLIST OF STONEFLIES (PLECOPTERA) FROM MARYLAND

Thirty-six new state records of stoneflies from Maryland are reported. A total of 95 species is now confirmed from Maryland, with most recor ds from the Appalachian Mountains of the western section of the state. Notes on the regional distribution of individual species and a revise d state checklist are included. The stonefly fauna of Maryland has rec eived little attention compared to recent and comprehensive inventorie s from each adjacent state: Delaware (Lake, 1980), Pennsylvania (Maste ller, 1996), Virginia (Kondratieff and Kirchner, 1987), and West Virgi nia (Tarter and Kirchner, 1980). Prior to the study of Duffield and Ne lson (1990), only 33 species were listed by Stark ef al. (1986). Duffi eld and Nelson (1990) added 25 new state records based on specimens co llected from Big Hunting Creek, a trout stream in the Blue Ridge Physi ographic Province. In addition, Sweltsa lateralis (Banks) was reported from Maryland by Surdick (1985) but not included by Stark et al. (198 6) or Duffield and Nelson (1990). A study was initiated by the author in 1993 to survey the stonefly fauna of the Appalachian Mountains of w estern Maryland. All material was collected by the author (SAG) and Ri chard E. Jacobsen, University of Pittsburgh (REJ). Material were also examined from the United States National Museum (USNM) and Carnegie Mu seum of Natural History (CMNH), and the personal collection of Dr. Reb ecca F. Surdick (RFS). This paper reports 36 new state records, increa sing the new state total to 95 species. All new records detailed below are limited to three occurrences where at least males were collected. Twenty-four species are considered Appalachian (AP) in distribution, eleven are widespread-boreal (WB) distributed species, and one is prim arily a Gulf Coastal Plain (CP) species.