Key to the Solter species of Maghreb and West Africa

1. Forewing at least 40 mm long. 3 presectoral crossveins in hind wings................................. dogon nov. sp.

- Forewing less than 40 mm long. More than 3 presectoral crossveins in hind wings.................................. 2

2. Last segment of labial palpus greatly enlarged (Fig. 42).............................................. naevipennis

- Last segment of labial palpus not greatly enlarged, spindle-shaped............................................... 3

3. Mesonotum spotted (Figs 17, 31)......................................................................... 4

- Mesonotum variably colored but not spotted................................................................ 5

4. Fore and mid tibiae uniformly yellow....................................................... leopardalis nov. sp.

- Fore and mid tibiae with a median and apical dark markings................................................. liber

5. Forewing longer than 30 mm. Tentorial pit large and deep (Fig. 13)................................. francoisi nov. sp.

- Forewing lesser than 30 mm. Tentorial pit narrow and small.................................................... 6

6. Hind tibial spur weak, straight and almost as long as 1 St tarsomere (Fig. 49). General body coloration dark reddish-brown................................................................................................. neglectus

- Hind tibial spur well developed, curved apically and reaching at least the middle of tarsomere 2. General body coloration light brown or yellow...................................................................................... 7

7. General color yellow (Fig. 56)...................................................................... ardens

- General color brown................................................................................... 8

8. Tarsomeres 3 and 4 darker that other tarsomeres. Legs with conspicuous dark markings.................. bouyeri nov. sp.

- All tarsomeres of the same color. Legs uniformly yellow or with very light markings................................ 9

9. Hind tibia spurs longer than Tarsomeres 1 + 2 (Fig. 38)............................................. lucretii nov. sp.

- Hind tibiae spurs shorter than Tarsomeres 1 + 2 (Fig. 55)............................................... rothschildi