Oecetis tripunctata (Fabricius, 1793), 5th instar larva. 1 Head, dorsal view (e = subocular ecdysial line bending dorsally and meeting frontoclypeal suture; ss = secondary setae on labrum) 2 Head, ventral view (a = ventral apotome; mp = maxillary palp) 3 Mandibles, dorsal view 4 Head, thorax and 1st abdominal segment, right lateral view (p = pronotum; ms = mesonotum; mt = metanotum; dp = dorsal protuberance; lp = lateral protuberance) 5 Head and thorax, dorsal view (a = antenna) 6 Right protrochantin, lateral view (p = pale setae). Scale bars: 0.5 mm (except Figs 3, 6: 0.1 mm).