The epicaridium larvae of Paragigantione species (Isopoda: Epicaridea: Bopyridae) have external yolk sacs: transfer of the genus to Pleurocryptellinae, description of two new species in the genus and a new species of hyperparasite (Isopoda: Epicaridea: Cabiropidae).

IF 1 4区医学 Q4 PARASITOLOGY

Systematic Parasitology Pub Date : 2024-10-25 DOI:10.1007/s11230-024-10190-z

Christopher B Boyko, Jason D Williams, Gianna Sancetta

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引用次数: 0

Abstract

The epicaridean isopods previously known to have epicaridium larvae with posterior yolk sacs were species of Pleurocryptella Bonnier, 1900 and a new subfamily, Pleurocryptellinae, was recently erected for this genus. Epicaridium larvae bearing posterior yolk sacs are newly reported from two species of the genus Paragigantione Barnard, 1920 which is transferred from Pseudioninae to Pleurocryptelline on the basis of this and other shared characters of adult males and females with species of Pleurocryptella. Two new species of Paragigantione are described, one from the northeast Atlantic based on type material that was misidentified as belonging to the type species of the genus, P. papillosa Barnard, 1920 and a second from off New Zealand. One specimen of the New Zealand species had a cryptoniscus larva of a new species of hyperparasite of the genus Bourdonia Rybakov, 1990 in the marsupium while another had a species of Duplorbis (Rhizocephala); the former is described based on this material as well as a specimen from a specimen of Pseudione cf. fibriata Richardson, 1910 from New Zealand. Keys to species of Paragigantione for both males and females are provided.

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Paragigantione 种（等足目：表皮虫科：Bopyridae）的表皮虫幼虫具有外部卵黄囊：将该属归入 Pleurocryptellinae，描述了该属的两个新种和一个超寄生虫新种（等足目：表皮虫科：Cabiropidae）。

以前已知的具有后卵黄囊的表皮异足类幼虫是 Pleurocryptella Bonnier, 1900 的种，最近为该属建立了一个新的亚科 Pleurocryptellinae。新近从 Paragigantione Barnard 属的两个种中发现了带有后卵黄囊的幼虫，根据该特征以及成年雄虫和雌虫与 Pleurocryptella 种的其他共同特征，该属从 Pseudioninae 属转入 Pleurocryptelline 属。描述了 Paragigantione 的两个新种，一个来自大西洋东北部，其模式材料被误认为属于该属的模式种 P. papillosa Barnard, 1920，另一个来自新西兰近海。新西兰种的一个标本的跗节内有 Bourdonia Rybakov, 1990 属的一个新种超寄生虫的隐翅幼虫，而另一个标本则有一个 Duplorbis（Rhizocephala）种；前者是根据这一材料以及来自新西兰的 Pseudione cf. fibriata Richardson, 1910 的标本描述的。本文还提供了雄性和雌性 Paragigantione 的种钥。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Systematic Parasitology 医学-寄生虫学

CiteScore

2.20

自引率

23.10%

发文量

审稿时长

6-12 weeks

期刊介绍： Systematic Parasitology publishes papers on the systematics, taxonomy and nomenclature of the following groups: Nematoda (including plant-parasitic), Monogenea, Digenea, Cestoda, Acanthocephala, Aspidogastrea, Cestodaria, Arthropoda (parasitic copepods, hymenopterans, mites, ticks, etc.), Protozoa (parasitic groups), and parasitic genera in other groups, such as Mollusca, Turbelleria, etc. Systematic Parasitology publishes fully illustrated research papers, brief communications, and fully illustrated major revisions. In order to maintain high standards, all contributors describing new taxa are asked to state clearly where the holotype is deposited and to make paratypes available for examination by the referees. It is recognized that, in some cases, this may cause problems for the authors, but it is hoped that by adhering to this rule authors may be protected against rapid synonymy of their taxa, and the types will be preserved for posterity.