Allassogonoporus callosciuri n. sp (Digenea : Allassogonoporidae) from theplantain squirrel Callosciurus notatus (Boddaert) (Rodentia : Sciuridae) in Borneo

A new digenean, Allassogonoporus callosciuri n. sp. from the plantain squir rel Callosciurus notatus from the Malaysian state of Sarawak, Borneo, is de scribed. The new species differs from: A. amphoraeformis by the size of the ventral sucker and the position of the vitellarium and uterus; and from A. marginalis by the smaller oral sucker, the position of the testes and vite llarium; from A. vespertilionis by the position of the vitellarium, testes and ovary; from A. asymmetrica by the position of the testes and uterus. Gi lford's (1955) and Dubois' (1963) opinions on the synonymy of Allassogonopo rus and Myotitrema is supported. No representatives of the family Allassogo noporidae have been reported previously from sciurids or South-East Asia.