Emendation ofCarpobothrium(“Tetraphyllidea”) from Bamboosharks (Orectolobiformes: Hemiscyliidae) with Redescription ofCarpobothrium chiloscylliiand Description of a New Species from Borneo

Abstract

ABSTRACT: Collection of new material from the bamboosharks Chiloscyllium indicum (Gmelin, 1789) and Chiloscyllium hasseltii Bleeker, 1852, from Indonesian and Malaysian Borneo prompted reevalutation of the identity and host associations of the cestode genus Carpobothrium Shipley and Hornell, 1906. Light microscopical examination of whole mounts, histological sections, and egg preparations, in combination with scanning electron microscopy of scoleces, led to redescription of the type species Carpobothrium chiloscyllii Shipley and Hornell, 1906, from Ch. indicum, as well as description of a new species from Ch. hasseltii. The proglottid anatomy of C. chiloscyllii is described for the first time. The genus was confirmed to exhibit pouch-like bothridia with relatively small anterior and posterior flaps that have a tendency to retract into the bothridial pouches, testes that are entirely pre‐poral, a uterus that extends only to the cirrus sac, and a vas deferens that coils posterior to the cirrus sac. Althoug...