Four new species of free-living marine nematode from the sea areas of China

2021 ◽  
Author(s):  
Jing Sun ◽  
Mian Huang ◽  
Yong Huang
Keyword(s):  
New Species ◽  
Marine Nematode ◽  
Free Living

Perspiria boucheri sp. nov. (Nematoda, Desmodorida) from the East China Sea

Zootaxa ◽  
2019 ◽  
Vol 4695 (2) ◽  
pp. 195-200
Author(s):  
JING SUN ◽  
HONGXIU ZHAI ◽  
YONG HUANG
Keyword(s):  
New Species ◽  
East China Sea ◽  
Buccal Cavity ◽  
Nematode Species ◽  
East China ◽  
Similar Species ◽  
Marine Nematode ◽  
The East China Sea ◽  
Free Living ◽  
China Sea

A new free-living marine nematode species from marine sediments in the East China Sea, is described here as Perspiria boucheri sp. nov. The new species is characterized by amphideal fovea surrounded partially by body annulations; four cephalic setae stout; conical buccal cavity with a minute dorsal tooth and two ventrosublateral teeth; pharynx with a pyriform terminal bulb; tail elongated, conical with 3/4 posterior cylindrical portion which having distinct coarse annulations; spicules strongly curved with narrow ventral velum, handle-shaped proximally; gubernaculum canoe-shaped, without apophysis. The new species differs from the most similar species Perspiria striaticaudata (Timm, 1962) by strongly curved spicules with handle-shaped proximal end, gubernaculum without dorsal apophysis and relatively shorter tail. Updated key to all species of Perspiria is provided. 

A new species of free-living marine nematode, Diplolaimella ariakensis n. sp. (Nematoda: Monhysteridae) from the Ariake Sea, Japan

Nematology ◽  
2021 ◽  
pp. 1-11
Author(s):  
Daisuke Shimada ◽  
Toshiki Komiya ◽  
Toyoshi Yoshiga
Keyword(s):  
New Species ◽  
Buccal Cavity ◽  
Marine Nematode ◽  
Ariake Sea ◽  
Free Living ◽  
Long Tail ◽  
Dichotomous Key ◽  
Anterior Position ◽  
Close Relationship ◽  
A New Species

Summary A new species of free-living marine nematode, Diplolaimella ariakensis n. sp., is described from a muddy tidal flat of the Ariake Sea, southern Japan. Diplolaimella ariakensis n. sp. differs from its congeners by the following: presence of ocelli, absence of denticles in the buccal cavity, a long tail (11-14 cloacal body diam., c = 3.2-4.0 in male, 17-21 anal body diam., c = 2.9-3.4 in female), spicules as long as 1.4-1.8 cloacal body diam., gubernaculum 0.4-0.5 cloacal body diam. long with a dorsocaudal apophysis 0.5-0.7 cloacal body diam. long, presence of a precloacal supplement, absence of postcloacal papillae, presence of seven pairs of body pores in male, and the anterior position of the vulva (V = 43-46). A dichotomous key to Diplolaimella species is provided. Almost full-length 18S rRNA and partial cytochrome c oxidase subunit I gene sequences were determined for D. ariakensis n. sp. A maximum likelihood tree of 18S sequences supported a close relationship between D. ariakensis n. sp. and D. dievengatensis.

scholarly journals Astomonema southwardorum sp. nov., a gutless nematode dominant in a methane seep area in the North Sea

1993 ◽  
Vol 73 (3) ◽  
pp. 627-634 ◽  
Author(s):  
M. C. Austen ◽  
R. M. Warwick ◽  
K. P. Ryan
Keyword(s):  
New Species ◽  
North Sea ◽  
Dominant Species ◽  
Methane Seep ◽  
Marine Nematode ◽  
Free Living ◽  
The North ◽  
Species Inquirenda ◽  
The North Sea ◽  
A New Species

A new species of mouthless and gutless free-living marine nematode, Astomonema southwardorum sp. nov., the dominant species from a methane seep pockmark in the North Sea, is described and illustrated. The new species is distinguished by its combination of short cephalic and cervical setae, with the latter being sparsely and irregularly distributed, and also in male specimens by its arrangement of precloacal and caudal setae and its postcloacal papillae. The genus Astomonema Ott, Rieger, Rieger & Enderes, 1982, is rediagnosed. Astomonema brevicauda (Vitiello, 1971) Vidakovik & Boucher, 1987, is considered to be a species inquirenda.

New species of Terschellingia (Nematoda: Linhomoeidae) from the Tamar estuary, England and the Maldive Islands

1989 ◽  
Vol 69 (1) ◽  
pp. 93-99 ◽  
Author(s):  
M. C. Austen
Keyword(s):  
New Species ◽  
Marine Nematode ◽  
Free Living ◽  
Tamar Estuary ◽  
South West ◽  
Oesophageal Bulb ◽  
A New Species ◽  
South West England

A new species of free-living marine nematode, Terschellingia gourbaultae sp. nov., from the Tamar estuary, south-west England, is described and illustrated. This species has also been recorded from Brittany, France. T. daviger, sensu Gerlach (1963) nec Wieser (1956) is a junior homonym and is re-named T. maldivensis sp. nov. Five Terschellingia species including the new species are distinguished by their lack of a distinctly offset, rounded oesophageal bulb; a table and figures are given to aid identification of these species.

Three new species of the free-living marine nematode Metoncholaimus Filipjev, 1918 (Enoplida, Oncholaimidae) from Argentinean coasts

Zootaxa ◽  
2019 ◽  
Vol 4688 (1) ◽  
pp. 86-100
Author(s):  
VIRGINIA LO RUSSO ◽  
CATALINA T. PASTOR DE WARD
Keyword(s):  
New Species ◽  
Large Body ◽  
Valid Species ◽  
Marine Nematodes ◽  
Marine Nematode ◽  
Large Body Size ◽  
Free Living ◽  
System A ◽  
Rio Negro ◽  
Three New Species

Three new species of free-living marine nematodes of the genus Metoncholaimus are described from San Matías gulf (Río Negro, Argentina). Metoncholaimus sanmatiensis sp. n. is characterized by large body size, long spicules, small gubernaculum, presence of long setose pre- and postcloacal genital sensilla and presence of precloacal pores. Metoncholaimus perdisus sp. n. is characterized by small-sized body, short spicules, small gubernaculum, presence of long setose pre- and postcloacal genital sensilla and presence of pre- and postcloacal pores. Metoncholaimus paracavatus sp. n. is closely related to Oncholaimus cavatus but can be considered as a new Metoncholaimus species based on the presence of gubernaculum and the morphology of the demanian system. A compendium of all valid species, including new species, is given. 

Tenuidraconema tongaense n. sp. (Nematoda: Draconematidae), a new free-living marine nematode from a seamount in the southwest Pacific Ocean

Nematology ◽  
2007 ◽  
Vol 9 (4) ◽  
pp. 545-560 ◽  
Author(s):  
Hyun Soo Rho ◽  
Dong Sung Kim ◽  
Won Gi Min
Keyword(s):  
New Species ◽  
Pacific Ocean ◽  
Marine Nematode ◽  
Free Living ◽  
Southwest Pacific ◽  
Diagnostic Characteristics ◽  
Shallow Subtidal ◽  
Anterior Body ◽  
Males And Females ◽  
A New Species

AbstractA new species of free-living marine draconematid nematode, Tenuidraconema tongaense n. sp., is described. This new species was collected from shallow subtidal dead corals and detritus from a seamount in a hydrothermal area off the Tonga Islands, southwest Pacific Ocean. Tenuidraconema tongaense n. sp. differs from the known species of the genus by the following combination of characters: longer body (1060-1265 μ m), position of 12 cephalic adhesion tubes (anterior six cephalic adhesion tubes inserted on rostrum and posterior six adhesion tubes inserted on anterior body annule in male; all 12 cephalic adhesion tubes inserted on rostrum in female), number of posterior sublateral adhesion tubes (11 in male, 12 in female) and posterior subventral adhesion tubes (9-11 in male, 10-11 in female) with somatic setae intermingled between the two anteriormost sublateral adhesion tubes, longer spicule length (43-50 μ m), and slender body (a = 41.1-48.6 in male and 29.4-35.1 in female). A pictorial key and a dichotomous identification key for males and females are provided for the species. A table comparing the major differential diagnostic characteristics of the species of Tenuidraconema is presented.

scholarly journals Oncholaimus langhovdensis sp. nov. (Nematoda: Enoplea: Oncholaimida), a New Species of Free-living Marine Nematode from Langhovde, Dronning Maud Land, East Antarctica

2017 ◽  
Vol 22 (2) ◽  
pp. 151-159 ◽  
Author(s):  
Daisuke Shimada ◽  
Atsushi C. Suzuki ◽  
Megumu Tsujimoto ◽  
Satoshi Imura ◽  
Keiichi Kakui
Keyword(s):  
New Species ◽  
East Antarctica ◽  
Marine Nematode ◽  
Free Living ◽  
Dronning Maud Land ◽  
A New Species
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