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Start Over Subject Heterocotylinae

1. Heliocotyle ewingi sp. n. (Monogenea: lMonocotylidae) from the gills of Myliobatis australis (Myliobatididae) from Tasmania, Australia

Creator:
Chisholm, Leslie A. and Whittington, Ian D.
Format:
print
Type:
model:internalpart and TEXT
Subject:
Monogenea, Monocotylidae, Heterocotylinae, Heliocotyle ewingi, Myliobatididae, Myliobatis australis, and Australia
Language:
English
Description:
Heliocotyle ewingi sp. n. (Monogenea: Monocotylidae) is described from the gills of Myliobatis australis Macleay, 1881 (Myliobatididae) collected from Norfolk Bay near Hobart, Tasmania, Australia. Heliocotyle ewingi can be distinguished readily from the only other species in the genus, Heliocotyle kartasi Neifar, Euzet et Ben Hassine, 1999, by the presence of a single pseudoseptum on each of the peripheral loculi except the posteriormost, eyespots and by the morphology of the male copulatory organ which is a short, straight sclerotised tube which lacks a sclerotised accessory piece. The generic diagnosis is revised to accommodate the new species and the anterior glands are discussed.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

2. Two new species of Myliocotyle (Monogenea: Monocotylidae) from the gills of Aetomylaeus maculatus and A. nichofii (Elasmobranchii: Myliobatidae) from Sarawak, Borneo, Malaysia

Creator:
Chisholm, Leslie A. and Whittington, Ian D.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
Monogenea, Monocotylidae, Heterocotylinae, Myliocotyle, Myliobatidae, Aetomylaeus, and taxonomy
Language:
English
Description:
Myliocotyle borneoensis sp. n. and M. multicrista sp. n. (Monocotylidae: Heterocotylinae) are described from the gills of the mottled eagle ray, Aetomylaeus maculatus (Gray), and the banded eagle ray A. nichofii (Bloch et Schneider) (Myliobatidae), respectively, collected from the northern coast of Malaysian Borneo. These are the first monogeneans to be described on elasmobranchs from Borneo. The formerly monotypic Myliocotyle (for M. pteromylaei) was distinguished from other monocotylids by the distribution and morphology of the eight sclerotised dorsal haptoral accessory structures and the morphology of the male copulatory organ. However, we have determined that M. pteromylaei has ten structures on the dorsal surface of the haptor. Myliocotyle borneoensis is distinguished from M. pteromylaei by the morphology of the male copulatory organ and its accessory piece. Myliocotyle multicrista has 12 sclerotised dorsal haptoral accessory structures and a male copulatory organ with two accessory pieces. Additional sclerotised ridges across the ventral surfaces of each loculus (except the posterior-most pair) are also present in M. multicrista. The diagnosis for Myliocotyle is revised given our discovery of additional dorsal haptoral accessory structures in the type species and to accommodate other new characters of the two new species. Anterior secretions of Myliocotyle are discussed.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public