Redescription of the African duck leech Theromyzon cooperi (Harding, 1932) (Hirudinea:Glossiphoniidae)

Abstract

The African duck leech Theromyzon cooperi, which is the only representative of the genus so far reported in Africa, is redescribed. Aspects of its internal morphology are described for the first time. The conspecificity of the two supposed species T. cooperi and T. lineatum is also indicated.