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Issue: Vol. 5244 No. 1: 16 Feb. 2023
Type: Article
Published: 2023-02-16
DOI: 10.11646/zootaxa.5244.1.6
Page range: 71-81
Abstract views: 249
PDF downloaded: 36

Review of Admirandus Belogurov & Belogurova, 1979 (Nematoda, Oncholaimidae) with the description of a new species and the first record of the genus from Brazil

Departamento de Oceanografia, Laboratório de Bentos (LABEN), Universidade Federal de Pernambuco—Av. Prof. Moraes Rego, 1235—Cidade Universitária, Recife—PE, 50670-901 Pernambuco, PE, Brazil
Departamento de Biologia, Laboratório de Estudos meiofaunísticos e socioambientais (LEMS), Universidade Federal Rural de Pernambuco (UFRPE)—Rua Dom Manuel de Medeiros, s/n—Dois Irmãos, Recife—PE, 52171-900 Pernambuco, Brazil
Departamento de Oceanografia, Laboratório de Bentos (LABEN), Universidade Federal de Pernambuco—Av. Prof. Moraes Rego, 1235—Cidade Universitária, Recife—PE, 50670-901 Pernambuco, PE, Brazil. The Marine Biological Association of the UK, Plymouth PL1 2PB, UK.
tropical estuary mangrove taxonomy demanian system Nematoda

Abstract

The present study provides a description of a new Admirandus species from northeastern Brazil, together with an updated species identification key. Admirandus capibaribei sp. n. can be distinguished from all the other Admirandus species by its physical dimensions (body length, a, stoma and spicule ratios), sexual dimorphism of the tail, the absence of pre-cloacal supplements, and the presence of a row of denticles at the base of the right ventrosublateral tooth. While Admirandus has been reported from temperate, subtropical and tropical environments around the world, this is the first record of the genus from Brazil. Further research on Admirandus and other Adoncholaiminae species, which include the integration of morphological and molecular approaches, will be important to provide a better understanding of the taxonomy of this group, as well as on its demanian system.

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