Echinobothrium reesae (Cestoda : Diphyllidea) from the sting rays of Waltair coast

Abstract

L'auteur décrit une nouvelle espèce du genre Echinobothrium Van Beneden 1849, provenant de la valve à spirale des pastenagues, Trygon walga, Muller et Henle et T. uarnak Muller et Henle à quelque distance de la côte de Waltair. Les détails anatomiques de la musculature et des systèmes reproductifs mâles et femelles sont donnés. Echinobothrium reesae n. sp. est comparé et séparé des autres espèces, qui ont été décrites jusqu'ici. L'absence complète des épines dorsales sur le pédoncule cépha lique et le nombre des crochets apicaux (13 + 4) sur la rostellum du scolex, justifient l'établissement de la nouvelle espèce E. reesae. Summary A new species of the genus Echinobothrium Van Beneden 1849, obtained from the spiral valve of sting rays, Trygon walga, Muller & Henle and T. uarnak Muller & Henle off Waltair coast, is described. Anatomical details of musculature, male and female repro ductive systems are furnished. Echinobothrium reesae n. sp. is compared and separated from other species hitherto described. The complete absence of the spines on the cephalic peduncle and the number of apical hooks (13 + 4) on the rostellum of the scolex, justify the establishment of the new species E. reesae.

Macrobothridium rhynchobati n. g., n. sp. from the elasmobranch Rhynchobatus granulatus, representing a new family of diphyllidean cestodes, the Macrobothridiidae

“…None of the species of Echinobothrium have the posterior extension and the sucker-like structure described for the last proglottid of the present specimens. Most species of Echinobothrium are small, measuring up to 10mm in length, although E. reesae Ramadevi, 1969 and E. longicolle Southwell, 1925 measure up to 15 and 30 mm in length respectively. The new species is larger measuring up to 43 mm in length.…”

“…This species, with an unarmed peduncle, was described from sting rays from coastal waters of Waltair, India. The author (Ramadevi, 1969) did not indicate how many specimens were found and stated that the specimens were flattened under cover slip pressure. It has never been reported since, despite the extensive work on fish parasites of India.…”