\u3ci\u3eAcanthobothrium electricolum\u3c/i\u3e sp. n. and \u3ci\u3eA. lintoni\u3c/i\u3e Goldstein, Henson, and Schlicht 1969 (Cestoda: Tetraphyllidea) from \u3ci\u3eNarcine brasiliensis\u3c/i\u3e (Olfers) (Chondrichthyes: Torpedinidae) in Colombia

Acanthobothrium lintoni and a new species of Acanthobothrium are reported from the lesser electric ray Narcine brasiliensis in Colombia. The new species resembles all other members of the genus parasitizing torpedinids by having a relatively small scolex, long and spinose cephalic peduncle, fewer than 75 testes per proglottid, an indistinct genital atrium, and V-shaped ovaries with ovarian lobes of equal length which do not reach the posterior margin of the cirrus sac. The new species differs from all known species by having bothridial hooks only 46 to 64 μm in total length. A key to the species of Acanthobothrium parasitizing torpedinids is presented