FIGURES 20–22 in Redescription of the last instar larva of Stenophylax fissus (McLachlan 1875) and the DNA barcode of Stenophylax crossotus McLachlan 1884 (Trichoptera Limnephilidae) with an updated diagnostic matrix of the known larvae of Stenophylax species of the Iberian Peninsula

FIGURES 20–22. Larva of Stenophylax fissus (McLachlan 1875). (20) Tip of abdomen, caudoventral; sternum IX setae, red arrows; right anal claw and its accessory hook, black arrow. (21, 22) Larval cases: (21) case of earlier instar; (22) case of later instar. All figures scale: 1 mm.