Batracobdelloides gracilis

External morphology

Animal fusiform, slender, greyish, uniformly coloured, without spots or bands, 6 mm long and 1 mm wide (fig. 2). Body widened posteriorly, then narrowing so as to join the posterior sucker by a sort of peduncle. Two clearly distinct eyes; no "cervical gland". Cephalic extremity heart-shaped and widened, comprising three preocular annuli and the first eight annuli, the latter representing somites I–IV. The total number of annuli is 69. Somites I–III are made up of the first five annuli; somites IV–XXII are complete, that is, each formed of three annuli; somites XXIII–XXVI are represented by the last seven annuli. The last annulus of somites V–XXII is bounded in front and behind by a furrow more pronounced than the one separating annuli 1 and 2 of each somite; as a result, the third annulus appears at first glance more conspicuous than the other two. The segmental papillae are not visible

Habitat & range

Habitat

Freshwater

Region

Asia

Recorded from

Java, Indonesia

Biology

On crabs/fishes

Junior synonyms

Helobdella gracilis, Pacobdella gracilis, Batracobdella gracilis