Morphological and molecular characterisation of the Popijač’s Yellow Sally, Isoperla popijaci sp. nov., a new stenoendemic stonefly species from Croatia (Plecoptera, Perlodidae)

Morphology of Isoperla popijaci sp. nov. A head and pronotum in dorsal view (adult female PT) B terminalia in ventral view (adult female PT) C terminalia in ventral view (adult male HT) D head and pronotum in dorsal view (larval PT) E abdomen in dorsal view and detail of a distal segment of a cercus (larval PT) F right maxilla in dorsal view (larval PT) G penial armature (adult male HT). Scale bars: 1 mm (A–D); 0.5 mm (E–G).