Key to the species of Lamprops

1. Telson less than 0.5 uropod peduncle length....................................................... L. korroensis - Telson longer than 0.5 uropod peduncle length.............................................................. 2 2. Carapace without lateral ridges........................................................................... 4 - Carapace with at least 1 lateral ridge (may be weak).......................................................... 5 3. Uropod peduncle without medial seta............................................................... L. pumilio - Uropod peduncles with more than 4 medial setae............................................................. 4 4. Carapace without antennal notch; pseudorostrum blunt; eyelobe large................................. L. northwindae - Carapace with weak antennal notch; pseudorostrum pointed; eyelobe small................................ L. fuscatus 5. Carapace with 1 lateral ridge (may be weak)................................................................ 6 - Carapace with 3 lateral ridges; telson with 1 pair long lateral setae....................................... L. fasciatus 6. Telson with 5 terminal setae; carapace lateral ridge weak................................................. L. sarsi - Telson with 3 terminal setae; carapace lateral ridge strong............................................... L. beringi