Nulloviger

Key to species in the subgenus Nulloviger

1. Post-ocular tubercle present ....................................................... 2

- Post-ocular tubercle absent ......................................................... 4

2. Proboscis conical-shaped. Dorsomedian tubercles on trunk armed with conical or digitiform processes ....................... P. ( N.) portus View in CoL

- Proboscis tapering distally. Dorsomedian tubercles on trunk rounded ....................................................................................... 3

3. Dorsomedian tubercles on trunk more prominent. Lateral processes 1–3 touching each other. Auxiliary claws present ........ ............................................................. P. ( N.) bifurcatum View in CoL sp. nov.

- Dorsomedian tubercles on trunk less prominent. Lateral processes separated. Auxiliary claws absent ..................... P. ( N.) carinatum View in CoL

4. Dorsal tubercle on proboscis present ......................................... 5

- Dorsal tubercle on proboscis absent ........................................... 8

5. Dorsal tubercle on proboscis small. Lateral processes slightly separated. Abdomen reaching half of coxa 3 ................................ ....................................................................... P. ( N.) tuberculatum

- Dorsal tubercle on proboscis prominent. Lateral processes separated more than 1/4 of basal width. Abdomen reaching distal end of coxa 2 .............................................................................. 6

6. Transverse ridge less conspicuous. Proboscis tapering in lateral view. Femur armed with two lobes and three bosses on dorsal surface ........................................................... P. ( N.) moolenbeeki

- Transverse ridge prominent. Proboscis cylindrical in lateral view. Femur armed with two lobes and projection on dorsal surface .. 7

7. Integument granular. Trunk segment 4 without parallel part. Spines with bifurcated tips on ventral surface of tibia, tarsus, and propodus ......................................................... P. ( N.) granulatum

- Integument granular and pitted. Trunk segment 4 having parallel part. Spines with round tips on ventral surface of tibia, tarsus, and propodus ............................................................... P. ( N.) spatium View in CoL

8. Integument reticulate .................................................................. 9

- Integument not reticulate .......................................................... 10

9. Lateral processes separated. Proboscis conical. Legs not conspicuously tuberculated .............................. P. ( N.) africanum View in CoL

- Lateral processes touching each other. Proboscis tapering not conical. Legs conspicuously tuberculated .. P. ( N.) cataphractum View in CoL

10. Transverse ridge conspicuous. Lateral processes widely separated. Ocular tubercle with conical tip ............................ P. ( N.) lobipes

- Transverse ridge inconspicuous. Lateral processes slightly separated. Ocular tubercle with plat tip .................................... 11

11. Auxiliary claws absent .................................. P. ( N.) anovigerum

- Auxiliary claws present ........................................ P. ( N.) planum