1	Promerite with parallel margins, apically regularly rounded, without lateral incision (Fig. 43); mesomerite distally expanded into a subrectangular apical plate, concave and mesally incised (Fig. 44)	Ommatoiulus sempervirilis
–	Promerite with at least one lateral or apical incision (Figs 2, 7, 14, 20, 32, 45, 47, 49, 51); mesomerite different	2
2	Mesomerite (Ms) apically expanded and bifurcated (Figs 16, 46)	3
–	Mesomerite (Ms) apically narrowed and simple (Figs 3, 9, 24, 33, 48, 50, 53)	4
3	Mesomerite (Ms) hammer-shaped (Fig. 46), bifurcated into long asymmetrical processes; promerite (Fig. 45) broad, with a complex distal process, apically bearing two blunt bumps, a pointed process and a lateral serrated lamella	Ommatoiulus malleatus
–	Mesomerite (Ms) horn-shaped (Fig. 16), bifurcated into short and curved processes; promerite (Fig. 14) apically with three lobes separated by deep incisions	Ommatoiulus kefi sp. n.
4	Promerite gradually narrowing distally, lateral incision shallow to moderately deep; mesal ridge sometimes protruding in a serrated subapical process (se) (Figs 2, 32, 47); paracoxite (Px) without conspicuous marginal serrations (Figs 5, 34, 48, 50)	5
–	Promerite strongly narrowing distally, lateral incision deep; mesal ridge protruding in a blunt subapical process (Figs 7, 20, 51); paracoxite (Px) broad, lamellar, folded, with strong marginal serrations (Figs 8, 22, 52)	10
5	Mesomerite (Ms) slender, sinuous and strongly curved distally; solenomerite (S) with a long distal process (ds) lodging the seminal groove (Fig. 48)	Ommatoiulus seurati
–	Mesomerite (Ms) broad, distally narrowing; solenomerite (S) with a shorter distal process lodging the seminal groove (Figs 3, 33, 50)	6
6	Mesomerite (Ms) with irregular margins, apically strongly narrowed and hook-shaped; solenomerite (S) with a short distal process (ds) (Figs 37, 50)	7
–	Mesomerite (Ms) with a regular mesal margin, distally gradually narrowed into a bent folded process; solenomerite (S) with a longer distal process (ds) (Figs 3, 33)	8
7	Mesomerite with a subapical serrated lateral process, a truncated mesal margin, apically strongly narrowed into a small hook-shaped process (Fig. 50); promerite with a shallow lateral incision and a rounded distal process (Fig. 49)	Ommatoiulus fuscounilineatus
–	Mesomerite with a subapical lateral process (Figs 37, 39), apically gradually narrowed in a long curved process (Fig. 39); promerite with a deeper lateral incision and a broad distal process with apical and lateral lobes (Fig. 36)	Ommatoiulus zaghouani sp. n.
8	Promerite straight, bearing a pointed distal process (Fig. 27); paracoxite stout and shorter (Fig. 30)	Ommatoiulus xenos sp. n.
–	Promerite strongly bent anteriad, bearing a subapical serrated process (Figs 1, 31); paracoxite broad and elongate (Figs 5, 34)	9
9	Solenomerite (S) with a rounded notch (n), a pointed process (pr) and apically a wrinkled protruding lamella (Fig. 5); promerite with a subtriangular apex (Fig. 2)	Ommatoiulus chambiensis sp. n.
–	Solenomerite (S) without such a process; wrinkled lamella not protruding (Fig. 33); promerite with a globular apex (Fig. 32)	Ommatoiulus xerophilus sp. n.
10	Lateral incision of promerite extending basad, distal process broad and triangular (Fig. 20); mesomerite (Ms) distally strongly narrowed, without subapical serrations on lateral margin, paracoxite (Px) slender (Fig. 22)	Ommatoiulus khroumiriensis sp. n.
–	Lateral incision of promerite not extending basad, distal process slenderer and more rounded (Figs 7, 51); mesomerite (Ms) with lateral subapical serrations, paracoxite (Px) broader (Figs 12, 53)	11
11	Apical process of promerite (ap) bulgy, with a lobed process (ap1) on tip (Fig. 7); mesomerite (Ms) with strong subapical mesal serrations (Fig. 8); paracoxite (Px) broadened distally with truncated apex (Fig. 12)	Ommatoiulus crassinigripes
–	Apical process of promerite slender, without a lobed process; mesomerite (Ms) without mesal serrations (Fig. 52); paracoxite (Px) distally narrowed, with rounded apex (Fig. 53)	Ommatoiulus punicus