A New Species of Pachysentis Meyer, 1931 (Acanthocephala: Oligacanthorhynchidae) in the Brown-Nosed Coati Nasua nasua (Carnivora: Procyonidae) from Brazil, with Notes on the Genus and a Key to Species

Ana Paula N. Gomes,Natalie Olifiers,Joyce G. R. Souza,Rita de Cassia Bianchi,Arnaldo Maldonado,Omar M. Amin,Helene S. Barbosa

doi:10.2478/s11686-019-00080-6

Ana Paula N. Gomes, Natalie Olifiers + Show 5 more

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https://doi.org/10.2478/s11686-019-00080-6

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Abstract

IntroductionPachysentis comprises 10 species, which have been reported parasitizing mammals in Africa and the American continent. However, species of Pachysentis have not been described in brow-nosed coatis. Pachysentis lauroi n. sp. (Oligacanthorhynchidae: Acanthocephala) is described from the brown-nosed coati Nasua nasua (Linnaeus, 1766) Storr, 1780 (Procyonidae: Carnivora) in the Brazilian Pantanal wetlands of the Mato Grosso do Sul State, Brazil. MethodsSpecimens were studied using light and scanning electron microscopy. ResultThe new species is distinguished from other species of Pachysentis by the number of hooks in each longitudinal row (12 rows of 4 hooks, total of 48 hooks), presence of barbs on all hooks, and the organization of the cement glands. Notes on the genus Pachysentis [14] and a key to its species are provided. Critical comments on some species with a dubious diagnosis and questionable or missed key taxonomic characteristics are also reviewed. We also discuss the zoogeography of the members of the genus.

Highlights

Pachysentis comprises 10 species, which have been reported parasitizing mammals in Africa and the American continent
General With characters of Pachysentis is designated by Schmidt [17]
We suggest that the specimens designated as P. septemserialis [13, 17] may be synonymous with P. lenti [13, 17], as to the number of the hooks, other morphometric characteristics and the fact that both are parasites of primates of the family Callitrichidae

Summary

Introduction

Pachysentis comprises 10 species, which have been reported parasitizing mammals in Africa and the American continent. Species of Pachysentis have not been described in brow-nosed coatis. (Oligacanthorhynchidae: Acanthocephala) is described from the brown-nosed coati Nasua nasua (Linnaeus, 1766) Storr, 1780 (Procyonidae: Carnivora) in the Brazilian Pantanal wetlands of the Mato Grosso do Sul State, Brazil. Pachysentis [14] comprises 10 species, which have been reported parasitizing mammals in Africa and the American. The brown-nosed coati Nasua nasua (Linnaeus, 1766) Storr, 1780 (Procyonidae) is a medium-sized carnivore. Collected in the intestine of Nasua nasua from the Brazilian Pantanal Wetlands, Mato Grosso do Sul State. Is described using light microscopy and scanning electron microscopy (SEM) from the brown-nosed coati in the Brazilian Pantanal wetlands A few species of acanthocephalans have been reported infecting N. nasua, including Oncicola luehei [19, 17] in Pará, São Paulo, Minas Gerais, Mato Grosso, and Mato Grosso do Sul States [11, 13, 19, 23] and Neoncicola potosi [13, 17] in Foz de Iguaçú, Paraná State [15].

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