Sericostomatidae

Karaouzas, Ioannis & Waringer, Johann, 2017, The larva of Schizopelex huettingeri Malicky 1974 (Trichoptera: Sericostomatidae), including a preliminary key to the Sericostomatidae larvae of the Hellenic western Balkan region, Zootaxa 4311 (2), pp. 271-279 : 277

Key to the hitherto known final instar Sericostomatidae larvae of European Ecoregion 6 (Hellenic western Balkan region)

1 Pronotum with straight ventrolateral border ( Fig. 3 , dotted line); abdominal dorsum IX with 18–41 setae ( Fig. 15 pds); abdominal pleura I each without black comma-like marking on lateral protuberance ( Fig. 11 , arrow)................................................................................................ Schizopelex huettingeri Malicky 1974

- Pronotum with convex ventrolateral border ( Figs. 18, 19 , dotted curvature); abdominal dorsum IX with either 18–41 or 48–74 setae ( Figs. 21, 22 ); abdominal pleura I each with or without black comma-like marking on lateral protuberance ( Fig. 20 , arrow)..............................................................................................2

2 Abdominal dorsum IX with 18–41 setae ( Fig. 21 ); abdominal pleura I each with black comma-like marking on lateral protuberance ( Fig. 20 , arrow)................................................. Sericostoma flavicorne Schneider 1845 Sericostoma personatum ( Kirby & Spence 1826) ................................................. (not separable)

- Abdominal dorsum IX with 48–74 setae ( Fig. 22 ); abdominal pleura I without black comma-like markings on lateral protuberances (as in Fig. 11 , arrow).................................................. Oecismus monedula ( Hagen 1859)

Figures

FIGURES 1 – 4. Schizopelex huettingeri Malicky 1974, final inStar larva. 1, Head, frontal (arroW: antenna). 2, Head, ventral. 3, Head and pronotum, right lateral (arroW = anterior part of coXopleurite; dotted line = Straight ventrolateral margin of pronotum). 4, CoXopleurite, right lateral (arroW = anterior proceSS). Scale barS: 0.5 mm.

FIGURES 11 – 19. SericoStomatidae genn. Spp., final inStar larvae. FIGURES 11 – 17. Schizopelex huettingeri Malicky 1974: 11, meSo-, metanota, and abdominal SegmentS I and II, right lateral (arroW = lateral protuberance Without black, comma-like marking dorSal of lateral protuberance Seta); 12, abdominal Segment IV, 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, dorSal (apS = Setae on dorSum of anal proleg; pdS = Setae on poSterodorSal border of abdominal dorSum IX); 15, tip of abdomen, right dorSolateral (apS = Setae on dorSum of anal proleg; lS = Setae on lateral Sclerite; pdS = Setae on poSterodorSal border of abdominal dorSum IX; arroW = anal claW); 16, larval caSe, right lateral; 17, larval caSe, poSterior foramen reduced in diameter by Silk membrane. FIGURE 18. Sericostoma Sp., pronotum, right lateral (dotted line = curved outline of ventral margin). FIGURE 19. Oecismus monedula (Hagen 1859), pronotum, right lateral (dotted line = curved outline of ventral margin). Scale barS: 0.5 mm.

FIGURES 20 – 22. SericoStomatidae genn., Spp., final inStar larvae. FIGURES 20 – 21. Sericostoma Sp.: 20, meSo-, metanota, and abdominal SegmentS I and II, right lateral (arroW = lateral protuberance With black, comma-like marking dorSal of lateral protuberance Seta); 21, tip of abdomen, dorSal. FIGURE 22. Oecismus monedula (Hagen 1859), tip of abdomen, dorSal. Scale barS: 0.5 mm.