Thorny-headed worms

Description of subadult Pallisentis (Pallisentis) rexus (Acanthocephala: Quadrigyridae) from the vertebrate intermediate host in Thailand with an examination of the species identity

Publication Type:Journal Article
Year of Publication:2003
Authors:O. M. Amin, Taraschewski H.
Journal:Proceedings of the Biological Society of WashingtonProc. Biol. Soc. Wash.
Pagination:215 - 221
Date Published:2003///
ISBN Number:0006324X (ISSN)
Keywords:Acanthocephalus, Anguilliformes, Chelone glabra, Monopterus albus, morphology, Pallisentis, Quadrigyridae, Vertebrata

Subadults (considerably developed immatures) of the quadrigyrid acanthocephalan Pallisentis rexus Wongkham & Whitfield, 1999 are described from the swamp eel, Monopterus albus (Zieuw, 1793) in Thailand. The species is placed in the subgenus Pallisentis. Our specimens are compared with adults of the same species collected from the freshwater snakehead Ophicephalus striata Bloch also from Thailand. Discrepancies from the original description are noted, certain structures, e.g., proboscis hook roots and brain (cepahalic ganglion), are re-interpreted, and additional information provided.

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