Sweltsa hoffmani Kondratieff & Kirchner, 2009

Grubbs, Scott A., 2018, An Update On The Stonefly Fauna (Insecta, Plecoptera) Of Maryland, Including New And Emended State Records And An Updated State Checklist, Illiesia 14 (4), pp. 65-80 : 71

Sweltsa hoffmani Kondratieff & Kirchner, 2009 and Sweltsa onkos (Ricker, 1936) .

A total of 59 vials of material collected and determined as S. onkos by the first author in the 1990s from western Maryland were reexamined. Specimens of 55 vials, all from the Appalachian Plateau and Ridge and Valley Physiographic

Provinces, now pertain to S. hoffmani ( Fig. 23 ). Only three series from the Blue Ridge Physiographic Province (Frederick Co.) are of S. onkos ( Fig. 23 ). Kondratieff & Kirchner (2009, their pp. 297) likewise listed a single series of S. onkos from Frederick County ( Fig. 23 ). The S. onkos collections presented in Duffield & Nelson (1990, their Fig. 1 ) may also refer to “true” S. onkos .

Figures

Fig. 23. Distribution map of Sweltsa hoffmani and S. onkos in western Maryland, USA, based on material examined during this study plus one record in Kondratieff & Kirchner (2009). MD = Maryland, PA = Pennsylvania, VA = Virginia, WV = West Virginia.

Figs. 1–6. Perlesta sp. MD-5, Maryland, Sideling Hill Creek. 1–2, female, head + pronotum, dorsal profile; 3, entire egg, 300X; 4, egg, posterior pole, 500X; 5, egg, posterior pole and collar, 2300X; 6, egg, anterior pole and micropyles, 600X.