12–17 Sericostoma bergeri Malicky, 1973, final instar larva 12 Abdominal segment V, posterior section, left lateral, showing row of serrate lamellae 13 Abdominal segment VIII, anterior section, left lateral, showing row of forked lamellae 14 Tip of abdomen, right lateral (aps: setae on dorsum of anal proleg; ls: setae on lateral sclerite; pds: setae on posterodorsal border of abdominal dorsum IX; arrow: anal claw) 15 Tip of abdomen, dorsal (aps: setae on dorsum of anal proleg; pds: setae on posterodorsal border of abdominal dorsum IX) 16 Larval case, right lateral 17 Larval case, foramen posterior, reduced in diameter by silk membrane 18–19 Sericostoma herakles Malicky, 1999, final instar larva. 18 Head, ventral view 19 Detail of pronotum (right lateral) showing conically prolonged and pointed anterolateral corner (white circle) and curved ventral outline (black dots). Scale bars: 1 mm (except 12, 13: 0.5 mm).