THE GENUS ARGULUS (CRUSTACEA, BRANCHIURA) IN AFRICA - REDESCRIPTIONS OF TYPE-MATERIAL COLLECTED BY CUNNINGTON,W.A. DURING THE LAKE TANGANYIKA EXPEDITION IN 1913, WITH NOTES ON A-GIGANTEUS LUCAS AND A-ARCASSONENSIS CUENOT

Of the 11 specimens of Argulus Muller, 1785 examined during the presen t study, nine are recognised as valid. The two-specimens collected by W.A. Cunnington (1913) during the Expedition to Lake Tanganyika are re described. In these redescriptions, many species-specific features hav e been identified which facilitate identification when comparing with all other species of Argulus recorded from Africa. The type-material o f A. giganteus Lucas, A, purpureus Thorell, A. arcassonensis Cuenot an d A. otolithi Brian was examined. A. purpureus and A. otolithi were fo und to be synonyms of A. giganteus and A. arcassonensis, respectively. A. giganteus Ramakrishna, a homonym of A, giganteus Lucas, is recogni sed as a valid species but needs a new name.