FIGURES 22–25 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 22–25. Isoperla riverae sp. n., adult male, aedeagus, (A) posteroventral lobe, (B) posterior lobe, (C) pair of small caudal lobes, (D) conical apical lobe, (E) paired hemispherical anterior lobes, Drowning Creek, Moore/Richmond Co., North Carolina. 22. Lateral. 23. Details of fig. 22 inset, hair-like spinulae, sensilla basiconica and small rounded knobs with apical filaments. 24. Sharp spinulae and hair-like spinulae of posteroventral lobe (A) 25. Small mounds with sharp spinulae on posterior lobe (B).