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Issue: Vol. 4250 No. 4: 6 Apr. 2017
Type: Article
Published: 2017-04-06
DOI: 10.11646/zootaxa.4250.4.5
Page range: 347–357
Abstract views: 52
PDF downloaded: 1

Two new species of free-living marine nematodes of the family Oxystominidae Chitwood, 1935 (Enoplida) with a review of the genus Thalassoalaimus de Man, 1893 from the Argentine coast 

Laboratorio de Peces y Mariscos de interés comercial (LAPEMAR)-Centro para el Estudio de Sistemas Marinos (CESIMAR-CONICET), Blvd. Alte. Brown 2915, U9120ACF Puerto Madryn, Chubut, Argentina
Laboratorio de Meiofauna Marina (LAMEIMA)- Instituto de Diversidad y Evolución Austral (IDEAus-CONICET), Blvd. Alte. Brown 2915, U9120ACF Puerto Madryn, Chubut, Argentina.
Laboratorio de Meiofauna Marina (LAMEIMA)- Instituto de Diversidad y Evolución Austral (IDEAus-CONICET), Blvd. Alte. Brown 2915, U9120ACF Puerto Madryn, Chubut, Argentina.
Laboratorio de Meiofauna Marina (LAMEIMA)- Instituto de Diversidad y Evolución Austral (IDEAus-CONICET), Blvd. Alte. Brown 2915, U9120ACF Puerto Madryn, Chubut, Argentina
Nematoda Patagonia benthic description systematics key

Abstract

Two new free-living marine nematodes of the family Oxystominidae are described from San Antonio Bay (Río Negro) and San José Gulf (Chubut). Litinium australis sp. n., is characterized by having a rounded tail, by the first and second crown of cephalic setae with different lengths, gubernaculum with apophysis and by the presence of at least four precloacal papillae; Thalassoalaimus nestori sp. n., is characterized by having a conical tail, cephalic setae equal in length, gubernaculum with rounded and dorso-caudally directed apophysis and two precloacal papillae. An emended diagnosis of the genus Thalassoalaimus and a key to species are given.

 

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