Key to species of Gomphodesmidae from the Udzungwa Mts

The key also includes Emphysemastix dracarys sp. nov. from Iringa town.

1. Sternal process of body ring 6 ca 1½ times as long as wide, with median apiculus (Fig. 5A). Postnodal telopodite with a subglobose enlargement along the outer curvature...(Genus Emphysemastix Hoffman, 1966).................................................................................................................................. 2

– Sternal process of body ring 6 different (the sternal process of Agrophogonus pusillokiellandi Olsen & Enghoff sp. nov. is broken in the unique holotype). Postnodal telopodite without a subglobose enlargement........................................................................................................................................ 3

2. Paxillus (mid-ventral process on body ring 15) triangular (as Fig. 4A). Nodal process M absent ..... .......................................................................... Emphysemastix dracarys Olsen & Enghoff sp. nov.

– Paxillus rounded. Nodal processes M and L both present .................................................................. .............................................................................. Emphysemastix frampt Olsen & Enghoff sp. nov.

3. Sternal process on body ring 6 longer than wide with triangular tip (Fig. 5D). Nodal process M present, L absent. Gonopod telopodite making a hairpin bend, postnodal telopodite very long and straight, running close to and parallel with coxa (Fig. 13). Paracannular setae absent ....................... .......................................................... Pogoropsis prolixopes Rosenmejer & Enghoff gen. et sp. nov.

– Sternal process of body ring 6 and postnodal telopodite different .................................................... 4

4. Sternal process of body ring 6 broad and flat, or triangular with rounded tip (Fig. 5 E–G). Nodal process M present...(Genus Pogoro Hoffman, 2005)........................................................................ 5

– Sternal process of body ring 6 more or less elongate, apically rounded (Fig. 5 B–C). Nodal process M absent...(Genus Agrophogonus Hoffman, 2005)............................. 7

5. Enlarged tubercles on hypoproct projecting beyond edge of sclerite................................................ 6

– Tubercles on hypoproct not projecting beyond edge of sclerite.......................................................... ..................................................................................... Pogoro siren Rosenmejer & Enghoff sp. nov.

6. Two subapical lobes on postnodal telopodite, a triangular lateral lobe and an uncate mesal lobe (Fig. 7) .............................................................................................. Pogoro scharffi Hoffman, 2005

– Only one subapical lobe, of a narrow triangular shape, on postnodal telopodite (Fig. 9) ..................................................................... Pogoro alopias Rosenmejer & Enghoff sp. nov.

7. Postnodal telopodite short,flattened,laminate(Fig.19)… Agrophogonus mwanihana Hoffman, 2995

– Postnodal telopodite longer, slender, evenly attenuate to apex ......................................................... 8

8. Postnodal telopodite very long, forming a subcircular ¾ loop, evenly curved, no sharp angular twist. (Fig. 18) ............................................................ Agrophogonus hamulifer Olsen & Enghoff sp. nov.

– Postnodal telopodite shorter, with a sharp twist in a dorsal direction, perpendicular to prefemoral region, not forming a ¾ circle (Fig. 21) ............................................................................................ 9

9. Body width 8.7 mm. Nodal process C very long, slender and curved (Hoffman 2005: fig. 451) ....... ............................................................................................ Agrophogonus kiellandi Hoffman, 2005

– Body width 4.1 mm. Nodal process C shorter and less curved (Fig. 21) ............................................ ................................................................. Agrophogonus pusillokiellandi Olsen & Enghoff sp. nov.