FIGURES 1–4 in Isoperla riverae, a new stonefly species from the southeast Nearctic, with notes on sympatric species including the larval description of Isoperla lenati Szczytko & Kondratieff, 2015 (Plecoptera: Perlodidae)

FIGURES 1–4. Isoperla lenati, larva, Flat Creek, Hoke Co., North Carolina. 1. Habitus, dorsal. 2. Head and pronotum, dorsal, (a) pale medial area anterior to median ocellus, (b) anterolateral pale spots, (c) mediolateral pale spots, (d) enclosed pale ocellar spot, (e) pale ocular areas. 3. Abdomen, dorsal. 4. Abdomen, ventral.