Oecetis tripunctata (Fabricius, 1793), 5th instar larva. 7 Left 1st leg, posterior view 8 Left 2nd leg, posterior view 9 Left 3rd leg, posterior view 10 Tip of abdomen, dorsal view (ds = dorsal setae) 11 Tip of abdomen, left posterolateral view (ah = 2 accessory hooks on anal claw) 12a Larva and case, right lateral view 12b Tip of larval case, posterior view. Scale bars: 0.1 mm (except Fig. 10: 0.5 mm and Fig. 11: 1 mm).