Key to the species of Archispirostreptus, based on male gonopods

1. Apical metaplical process darker proximally than distally; apical metaplical process convex laterally, not finger-like ..................................................................................................................................................................................... 2

- Apical metaplical process not darker proximally than distally; apical metaplical process not convex laterally, finger- like................................................................................................................................................................................. 3

2. Lateral and medial edges of apical metaplical processes convex proximally (Fig. 5a); apical metaplical processes not deflected or overlapping medially .......................................................................................................................... gigas

- Lateral and medial edges of apical metaplical processes not convex proximally; apical metaplical processes deflected and overlapping medially (Fig. 3a, 3b) ............................................................................................ divergens

3. Apical metaplical processes deflected laterally (Figs 7a, 7b) ......................................................................... phillipsii

- Apical metaplical processes not deflected laterally......................................................................................................4

4. Lateral edges of apical metaplical process concave, with an angular projection (Figs 9a, 9b) ......................... syriacus

- Lateral edges of apical metaplical process not concave, without an angular projection .............................................. 5

5. Distal half of apical metaplical process acute, not rounded apically (Figs 10a, 10b) ................................. tumuliporus

- Distal half of apical metaplical process not acute, rounded apically............................................................................6

6. Distal half of lateral metaplical process deflected towards apical metaplical process (Figs 8a, 8b) .................. smithii

- Distal half of lateral metaplical process not deflected towards apical metaplical process ........................................... 7

7. Apex of sternum apex flat; metaplica narrow at level of paracoxite apex (Fig. 6a) .......................................... lugubris

- Apex of sternum not flat; metaplica not narrow at level of paracoxite apex................................................................8

8. Distal part of lateral metaplical process gently slanting towards paracoxite; proximal lateral metaplical process and proximal apical metaplical process at obtuse angle (Fig. 4a) ............................................................................ dodsoni

- Distal part of lateral metaplical process not slanting towards paracoxite; proximal lateral metaplical process and proximal apical metaplical process at right angle......................................................................................................... 9

9. Apex of proplica and apical metaplical process not thumb-like; lateral metaplical process wider and horizontal prox- imally, abruptly tapering distally (Fig. 1) ......................................................................................................... beccarii

- Apex of proplica and apical metaplical process thumb-like; lateral metaplical process not horizontal proximally or abruptly tapering distally (Fig. 2a)....................................................................................................................... bottegi