Identification key for all known species of Sparianthina

1 Males .............................................................................................. 2

- Females........................................................................................... 10

2(1) Embolus with medial spine-like projection (Figs 103−104, 108, 109)............................................ 3

- Embolus without medial spine-like projection (Figs 105−107, 110−111).......................................... 6

3(2) Embolus with basal projection single, filiform (Figs 103−104, 109).............................................. 4

- Embolus with basal projection bifid with one branch laminar and distally blunt and one branch pointed (Fig. 108; Jäger et al. 2009: figs 22−23)............................................................................. S. pumilla

4(3) RTA subdistally bifid, with ventral branch shorter than dorsal branch (Jäger et al. 2009: figs 69−70, 72−73); embolus two and a half times longer than wide (Figs 104, 109)............................................................... 5

- RTA subdistally bifid, with ventral branch longer and wider than dorsal branch (Jäger et al. 2009: figs 66−67) embolus almost as wide as long (Fig. 103)......................................................................... S. adisi

5(4) RTA distally blunt in retrolateral view (Jäger et al. 2009: fig 70); DTA pointing retrolaterad (Fig. 95).......... S. deltshevi

- RTA distally pointed in retrolateral view (Jäger et al. 2009: fig.73); DTA pointing anteriad (Fig. 100).......... S. saaristoi

6(2) Embolus with basal projection single (Figs 103−107, 109−110)................................................. 7

- Embolus with basal projection bifid, with one branch short, laminar and distally curved and one larger slightly concave (Fig. 111)...................................................................................... S. soca sp. n.

7(6) DTA without projections (Figs 96, 98, 101)................................................................. 8

- DTA with subdistal triangular projection (Fig. 97)..................................................... S. milleri

8(7) DTA not strongly curved retrolaterally (Figs 98, 101); embolus with wide base, abruptly narrowed towards tip (Figs 107, 110) ................................................................................................... 9

- DTA C-shaped, strongly curved retrolaterally; embolus gradually tapering (Figs 96, 105)....................... S. gaita

9(8) Embolus with rectangular base and basal projection gutter-shaped (Fig. 107); DTA gently curved (Fig. 98)....... S. parang

- Embolus with elliptical base and basal projection straight and laminar (Fig. 110); DTA strongly bent dorsally (Fig. 101)............................................................................................ S. selenopoides

10(1) Median septum with well-defined anterior atrium (Figs 83, 113−116); internal ducts strongly convoluted (Figs 84−85; Jäger et al. 2009: figs 15, 29, 59; Rheims 2011: fig. 5)............................................................. 11

- Median septum without well-defined anterior atrium (Fig. 112); internal ducts not convoluted (Rheims 2011: figs 13−14)................................................................................................. S. gaita

11(10) Lateral lobes converging and touching posteriorly (Figs 113−114).............................................. 12

- Lateral lobes not touching posteriorly (Figs 83, 115−116).................................................... 13

12(11) Median septum gradually narrowing posteriorly from anterior atrium (Fig. 114); glandular projection rounded, short (Rheims 2011: fig. 5).................................................................................. S. parang

- Median septum constricted by lateral lobes close to anterior atrium (Fig. 113); glandular projection long, cylindrical (Jäger et al 2009: figs 59−60)............................................................................. S. milleri

13(11) Lateral lobes touching each other medially (Figs 115−116)................................................... 14

- Lateral lobes not touching each other (Fig. 83).................................................. S. boyaca sp. n.

14(13) Anterior atrium rectangular, two times wider than long (Fig. 116).................................... S. selenopoides

- Anterior atrium slightly rounded, as wide as long (Fig. 115)............................................ S. pumilla