Nephrotoma

Ren, Jinlong & Yang, Ding, 2017, Nephrotoma Meigen (Diptera, Tipulidae) from Xinjiang, China, Zootaxa 4353 (3), pp. 551-567 : 552

Key to species male species of Nephrotoma from Xinjiang, China

1 Lateral prescutal stripe straight ( Fig. 2 ).................................................................... 2

- Lateral prescutal stripe curved outward ( Figs. 5 , 13 , 16 , 32 , 40 )................................................ 3

2 Isolated spot beneath anterior end of lateral prescutal stripe present; sternite 8 apically with a spiky middle projection; lobe of gonostylus short and partly sclerotized ( Figs. 1, 2 ) ( Oosterbroek 1978: p. 63, figs. 89, 92, 96A).... N. aculeata ( Loew, 1871)

- Isolated spot beneath anterior end of lateral prescutal stripe absent; sternite 8 apically widely V-shaped at middle, with tuft of long golden hairs; lobe of gonostylus slender and fleshy ( Oosterbroek 1979b: p. 169, figs. 10, 12)................................................................................................ N. quadristriata ( Schummel, 1833)

3 Sternite 8 with a middle appendage ( Figs. 35 , 43 ) ( Yang & Yang 1987: p. 244, Fig. 3A ).............................. 4

- Sternite 8 without middle appendage ( Figs. 8 , 19 ) ( Tangelder 1984: p. 28, Fig. 17 )................................. 8

4 Projection of sternite 8 acute at apex; wing tip with numerous small macrotrichiae ( Fig. 41 ) ( Oosterbroek 1978: p. 70, fig. 10 3)................................................................................ N. tenuipes ( Riedel, 1910)

- Projection of sternite 8 blunt at apex; wing tip with some small macrotrichiae...................................... 5

5 Tergite 9 darkened with a sickle-shaped pale yellow spot in front of posterior projection; mid-posterior margin of sternite 8 sunken ( Figs. 35, 36 ) ( Oosterbroek 1979b: p.175, figs. 59–61, 65–59)............. N. lundbecki lundbecki ( Nielsen, 1907)

- Tergite 9 without spot; mid-posterior margin of sternite 8 flattened or convex ( Fig. 14 ) ( Yang & Yang 1987: p. 244, Fig. 3A ; Oosterbroek 1978: p. 103, figs. 160A, 160B; Alexander 1925: p. 403)........................................... 6

6 Posterior extension of tergite 9 shallowly incised, without lateral projection; mid-posterior margin of sternite 8 with small projection ( Yang & Yang 1987: p. 244, Figs. 3A, 3B )............................. N. xinjiangensis Yang and Yang, 1987

- Posterior extension of tergite 9 deeply incised, with lateral projections; mid-posterior margin of sternite 8 with relatively long projection ( Oosterbroek 1978: p. 103, figs. 157, 160A, 160B; Alexander 1925: p. 403).............................. 7

7 Occipital marking extending up to top of vertex; median projection of sternite 8 knob-like at tip (fig. 13) ( Oosterbroek 1978: p.103, figs. 156A, 156B, 160A, 160B)...................................... N. cornicina cornicina ( Linnaeus, 1758)

- Occipital marking not extending to top of vertex; median projection of sternite 8 subtruncate at tip ( Alexander 1925: p. 403)................................................................................ N. ligulata Alexander, 1925

8 Wing without distinct shades; caudo-ventral surface of sternite 9 with broad lateral plates and a ventrally directed medisternal appendage ( Tangelder 1984: p. 28–29, Fig. 16 ).......................................... N. pjotri Tangelder, 1984

- Wing with shade at basal part of vein R4+5 and cross vein r-m; medisternal appendage of sternite 9 absent ( Figs. 6 , 8 , 17 , 19 )..................................................................................................... 9

9 Posterior extension of tergite 9 deeply depressed with two conical projections bearing short tines; sternite 8 clothed with long golden hairs ( Figs. 6 , 8, 9 ) ( Oosterbroek 1979b: p. 140, figs. 8A).......................... N. analis ( Schummel, 1833)

- Posterior extension of tergite 9 slightly depressed with four projections bearing tiny black spines; sternite 8 clothed with small hairs ( Figs. 17 , 19, 20 )................................................................. N. kanasensis sp. nov.

Figures

FIGURES 1–3. Nephrotoma aculeata (Loew, 1871) 1: Male habitus, later view; 2: Head and thorax, dorsal view; 3: Right wing.Scale bar:1–3 = 1.0mm.

FIGURES4–6. Nephrotoma analis (Schummel, 1833) 4: Male habitus, lateral view; 5: Head and thorax, dorsal view; 6: Right wing.Scale bar: 4–6 = 1.0 mm.

FIGURES12–14. Nephrotomacornicina cornicina(Linnaeus, 1758) 12: Malehabitus, later view; 13:Head and thorax, dorsal view; 14: Right wing. Scale bar: 12–14= 1.0 mm.

FIGURES 15–17. Nephrotoma kanasensis sp. nov. 15: Male habitus, later view; 16: Head and thorax, dorsal view; 17: Right wing.Scale bar: 15–17= 1.0 mm.

FIGURES 31–33. Nephrotoma lundbecki lundbecki (Nielsen, 1907) 31: Male habitus, lateral view; 32: Head and thorax, dorsal view; 33: Right wing.Scale bar: 31–33 = 1.0 mm.

FIGURES 39–41. Nephrotoma tenuipes (Riedel, 1910) 39: Male habitus, lateral view; 40: Head and thorax, dorsal view; 41: Right wing. Scale bar:39–41 = 1.0 mm.

FIGURES 34–38. Nephrotoma lundbecki lundbecki (Nielsen, 1907) 34: Hypopygium, lateral view; 35: Hypopygium, ventral view; 36: Tergite nine, dorsal view; 37: Clasper of gonostylus, lateral external view; 38: Lobe of gonostylus, lateral external view.Scale bar: 34–36 = 0.5 mm; 37–38 = 0.1 mm.

FIGURES 42–46. Nephrotoma tenuipes (Riedel, 1910) 42: Hypopygium, lateral view; 43: Hypopygium, ventral view; 44: Tergite nine, dorsal view; 45: Clasper of gonostylus, lateral external view; 46: Lobe of gonostylus, lateral external view. Scale bar:42–44 = 0.5 mm; 45–46 = 0.1 mm.

FIGURES7–11. Nephrotoma analis (Schummel,1833) 7: Hypopygium, lateral view; 8: Hypopygium, ventral view; 9: Tergite nine, dorsal view; 10: Clasper of gonostylus, lateral external view; 11: Lobe of gonostylus, lateral external view.Scale bar: 7–9 = 0.5 mm, 10–11 = 0.1mm.

FIGURES 18–22. Nephrotoma kanasensis sp. nov. 18: Hypopygium, later view; 19: Hypopygium, ventral view; 20: Tergite nine, dorsal view; 21: Clasper of gonostylus, lateral external view; 22:Lobe of gonostylus, lateral externalview.Scale bar: 18– 20 = 0.5 mm; 21–22 = 0.1mm.