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Issue: Vol. 4802 No. 3: 24 Jun. 2020
Type: Article
Published: 2020-06-24
DOI: 10.11646/zootaxa.4802.3.10
Page range: 556–568
Abstract views: 147
PDF downloaded: 2

Oloncholaimus piipi gen. et sp. nov. (Nematoda, Oncholaimidae) from Piip submarine volcano, the Bering Sea

Far Eastern Federal University, Vladivostok 690091, Russia A.V. Zhirmunsky National Scientific Centre of Marine Biology FEB RAS, Vladivostok 690041, Russia
A.V. Zhirmunsky National Scientific Centre of Marine Biology FEB RAS, Vladivostok 690041, Russia
Far Eastern Federal University, Vladivostok 690091, Russia
Far Eastern Federal University, Vladivostok 690091, Russia
Nematoda marine nematodes systematic Oncholaiminae buccal cavity armature teeth structure

Abstract

Oloncholaimus piipi gen. et sp. nov. is described from Piip submarine volcano, the Bering Sea. Oloncholaimus gen. nov. shows all main characters of Oncholaiminae: females monodelphic-prodelphic with antidromously reflexed ovary, three teeth with left ventrosublateral the largest, oncholaimoid type of Demanian system. New genus can be differentiated from all other genera of the family Oncholaimidae by the complex shape of dorsal and right ventrosublateral teeth with apical antler-shaped extension. Oloncholaimus piipi sp. nov. has large body (5960–7045 μm), six outer labial and four cephalic setae equal in size (5–7 μm), equal spicules (110–131 μm long) without gubernaculum, and complex precloacal supplementary organ composed of 8–9 cylindrical processes.

 

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