A new species of Benedenia Diesing, 1858 (Monogenea: Capsalidae) parasitic on Lethrinus haematopterus Temminck & Schlegel (Perciformes: Lethrinidae) from Japan

  • Masato NittaEmail author
Part of the following topical collections:
  1. Monogenea


A new species of capsalid monogenean, Benedenia armata n. sp., is described from Lethrinus haematopterus Temminck & Schlegel (Perciformes: Lethrinidae) from off Danjo Islands, Nagasaki Prefecture, Japan. The new species differs from other species of Benedenia Diesing, 1858 in that the common genital atrium has spines and the vas deferens has two swellings. Lethrinus haematopterus has been considered as the type-host of Benedenia ishikawae (Goto, 1894) based on the local name ‘Kuchibi-dai’. However, this name refers not only to L. haematopterus but also to L. nebulosus (Forsskål), and L. haematopterus examined in this study was not infected by B. ishikawae. Further study is required to determine the type-host of B. ishikawae and to redetermine the species of Benedenia that are parasitic on Lethrinus spp. in the type-locality of B. ishikawae (Hagi, Yamaguchi Prefecture, Japan).



I am grateful to Koichiro Kawai, Kazuya Nagasawa (Hiroshima University) and Takuya Sato (Kobe University) for providing laboratory facilities, and Seiji Arakaki and Taku Hotta (Kyushu University) for help collecting fish. Thanks go to an anonymous reviewer for valuable comments to improve the manuscript.


This study was supported by JSPS KAKENHI grants (no. 18J00466 to MN) and the hosts were collected under the biodiversity research partially supported by 27th Pro Natura Foundation Japan (to S. Arakaki).

Compliance with ethical standards

Conflict of interest

The author declares that he has no conflict of interest.

Ethical approval

All applicable institutional, national and international guidelines for the care and use of animals were followed.


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© Springer Nature B.V. 2019

Authors and Affiliations

  1. 1.Graduate School of ScienceKobe UniversityKōbeJapan

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