Pseudoplatycoma

Pseudoplatycoma	Contents	Rev: 06/22/2026
	Classification	Biology and Ecology
	Morphology and Anatomy	Life Cycle
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	Distribution	Management
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Classification:

Enoplea
Enoplia Enoplida
Ironina
Ironoidea
Leptosomatidae: Platycominae

Pseudoplatycoma Chen, 2015

Type species of the genus: Pseudoplatycoma malaysianis Chen, 2015

Synonyms:

Per Chen (2015) Pseudoplatycoma (as represented by the type species) differs from Platycomopsis based on the presence of ocellus-like paired pigment spots throughout the body, and the bluntly rounded proximal end of the spicules. Shimada and Kakui (2020) consider that Pseudoplatycoma is distinguished from all the other genera in subfamily Platycominae based on its unique paired tubular precloacal ventromedian supplements and the dorsal apophyses of the gubernaculum.

General characteristics of genus:

Cuticle smooth with paired pigment spots between nerve-ring and cloaca or anus.
Labial papillae not obvious, 8 cephalic setae, various cervical setae close to amphids
Esophagus cylindrical, about 1/6 of body length
Tail conical

Male:

Amphid aperture in males without setae or flap on posterior edge
Spicules paired, curved venatrally
Gubernaculum with dorsal apophyses
Precloacal ventromedian supplements tubular

Ref: Chen, 2015; Shimada and Kakui, 2020

Female:

Didelphic-amphidelphic
Vulva near mid-body

Body size range for the species of this genus in the database - Click:

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Distribution:

Free-living marine nematodes. Reported from the Sulu Sea of Malaysia at 15 m depth with sandy bottom.

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Feeding:

Food Sources and Feeding strategies for the genus Pseudoplatycoma

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Biology and Ecology:

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Life Cycle:

For Ecophysiological Parameters for this genus, click

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Ecosystem Functions and Services:

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Management:

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References:

Chen, C-A. 2015.A new marine nematode genus Pseudoplatycoma with a new species from the Sulu Sea and revision of the subfamily Platycominae (Enoplida: Leptosomatidae). Zootaxa 3905:233-244

Platonova, T.A., 1976. Lower Enoplida (free-living marine nematodes) of the seas of the USSR (in Russian). Issledovaniya Fauny Morei (Nematody i ikh rol v meiobentose) 15:3-164.

Platonova, T.A. and Galtsova, V.V. 1976. Nematodes and their Role in the Meiobenthos. Studies on Marine Fauna Vol XV(XXIII) Academy of Sciences USSR, Nauka, Leningrad, Translated 1985, Smithsonian Institute.

Shimada, D. and Kakui, K. 2020. A new species of free-living marine nematode, Proplatycoma tsukubae sp. nov. (Enoplida: Leptosomatidae), from Japan. Species Diversity 25: 205-211

Smol, N., Muthumbi, A., Sharma, J. 2014. Order Enoplida, 7.3. In Schmidt-Rhaesa, A. (ed) Handbook of Zoology. De Gruyter, Berlin