Limnephilus bipunctatus, Curtis, 1834

Sipahiler, Füsun, 2024, The Limnephilus bipunctatus Species Group in Turkey with the descriptions of two new species (Trichoptera, Limnephilidae), Zootaxa 5406 (1), pp. 105-122 : 121

Key to the species of the Limnephilus bipunctatus Species Group in Turkey

Males

1 Intermediate appendages long, in lateral view directed caudad ( Figs 2 , 9 )........................................ 2

- Intermediate appendages short, in lateral view directed dorsad ( Figs 16 , 23 , 30 , 37 )................................ 3

2 Spinulose zone of tergite VIII in dorsal view 1/2 as long as broad ( Fig. 9 ); preanal appendages roundly oval, 2.0 times as long as tall ( Fig. 9 ); intermediate appendages in dorsal view narrow ( Fig. 10 )........................... L. transcaucasicus

- Spinulose zone of tergite VIII in dorsal view narrow, 1/3 as long as broad ( Fig. 3 ); in lateral view, preanal appendages rather narrow and oval, 2.25 times as long as tall ( Fig. 2 ); intermediate appendages in dorsal view broadly triangular ( Fig. 3 ).............................................................................................. L. bipunctatus

3 Segment IX in lateral view narrow (longitudinally short), about as broad (long) as inferior appendages ( Figs 16 , 37 ); basoventral parts of intermediate appendages in caudal view thin ( Figs 18 , 39 ).............................................. 4

- Segment IX in lateral view broad (longitudinally long), much broader (longer) than inferior appendages ( Figs 23 , 30 ); basoventral parts of intermediate appendages in caudal view thick ( Figs 25 , 32 )................................... 5

4 Spinulose zone of tergite VIII in dorsal view subrectangular, 3/5 as long as broad, with lateral lobes densely covered with spines ( Fig. 17 ); intermediate appendages in lateral view almost as thick apically as basally and dorsal margins deeply concave basally ( Fig. 16 )................................................................................ L. bayburt sp. n.

- Spinulose zone of tergite VIII subelliptically trapezoidal, 1/3 as long as broad, without lateral lobes, sparsely covered with spines ( Fig. 38 ); intermediate appendages in lateral view taperedeach with apical half slender and dorsal margins gradually concave along most of length ( Fig. 37 )....................................................... L.bercalan sp. n.

5 Intermediate appendages in lateral view subtriangular, broad basally, upcurved dorsal margins gradually concave over full length ( Fig. 23 ); brachypterous.................................................................. L. malickyi

- Intermediate appendages in lateral view broad and dorsally convex in basal 2/3, narrower and dorsally concave in apical 1/3 ( Fig. 30 ); fully alate......................................................................... L. caucasicus

Figures

FIGURES 2–5. Male genitalia of Limnephilus bipunctatus Curtis 1834. 2, left lateral; 3, dorsal; 4, caudal; 5, phallicata and left paramere (paired), left lateral. Abbreviations: ia = intermediate appendage (paired); inf = inferior appendage (paired); pa = preanal appendage (paired); par = paramere (paired); sz = spinulose zone of tergite VIII.

FIGURES 9–12. Male genitalia of Limnephilus transcaucasicus Martynov 1909. 9, left lateral; 10, dorsal; 11, caudal; 12, phallicata and left paramere (paired), left lateral. Abbreviations: ia = intermediate appendage (paired); inf = inferior appendage (paired); pa = preanal appendage (paired); par = paramere (paired); sap = supra-anal plate; sz = spinulose zone of tergite VIII.

FIGURES 16–19. Male genitalia of Limnephilus bayburt sp. n. 16, left lateral; 17, dorsal; 18, caudal; 19, phallicata and left paramere (paired), left lateral. Abbreviations: ia = intermediate appendage (paired); inf = inferior appendage (paired); pa = preanal appendage (paired); par = parameter (paired); sz = spinulose zone of tergite VIII.

FIGURES 23–26. Male genitalia of Limnephilus malickyi Sipahiler 1992. 23, left lateral; 24, dorsal; 25, caudal; 26, phallicata and left paramere (paired), left lateral. Abbreviations: ia = intermediate appendage (paired); inf = inferior appendage (paired); pa: preanal appendage (paired); par: paramere.

FIGURES 30–33. Male genitalia of Limnephilus caucasicus Schmid 1955. 23, left lateral; 24, dorsal; 25, caudal; 26, phallicata and left paramere (paired), left lateral. Abbreviations: ia = intermediate appendage (paired); inf = inferior appendage (paired); pa = preanal appendage (paired); par = paramere (paired); sz = spinulose zone of tergite VIII.

FIGURES 37–40. Male genitalia of Limnephilus bercalan sp. n. 37, left lateral; 38, dorsal; 39, caudal; 40, phallicata and left paramere (paired), left lateral. Abbreviations: ia = intermediate appendage (paired); inf = inferior appendage (paired); pa = preanal appendage (paired); par = paramere (paired); sap = supragenital plate; sz = spinulose zone of tergite VIII.