Identification key to the Neuroleon species of West Africa (excluding N. nigericus)
1 Tarsal claws capable of closing against distal tarsomere....................................................... 2
– Tarsal claws not capable of closing against distal tarsomere.................................................... 3
2 Tibial spurs as long as basal tarsomere........................................................ N. rapax, nov. sp.
– Tibial spurs absent....................................................................... N. raptor, nov. sp.
3 Tibial spurs of hind leg minute or absent................................................... N. nubilatus (Navás)
– Tibial spurs of hind leg at least one half of distal tarsomere..................................................... 4
4 Three yellow markings on the abdominal tergite III........................................... N. modestus (Navás)
– At most two dots on the abdominal tergite III................................................................ 5
5 Abdominal tergite III entirely dark........................................................................ 6
– Abdominal tergite III with two yellow dots................................................................. 7
6 Legs entirely yellow...................................................................... N. ruber, nov. sp.
– Legs yellowish with black markings........................................................ N. drosimus Navás
7 Forewing with conspicuous brown markings................................................ N. pardalice (Banks)
– Forewing without conspicuous brown markings............................................ N. lapidarius, nov. sp.