Longicyatholaimus longacauda		Contents		Rev: 08/19/2026
		Classification		Biology and Ecology
		Morphology and Anatomy		Life Cycle
Return to Longicyatholaimus Menu				Ecosystem Functions and Services
		Distribution		Management
Return to Cyatholaimidae Menu		Feeding		References
		Go to Nemaplex Main Menu		Go to Dictionary of Terminology

Classification:

Chromadorea

  Chromadoria

  Chromadorida

Chromadorina

             Chromadoroidea

                Cyatholaimidae

        Cyatholaiminae

       Longicyatholaimus longacauda Liu & Guo, 2018

    Synonyms:
     

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Morphology and Anatomy:

• BBody cylindrical, 2.2-2.4 mm long; maximum diameter 71-97 um.
• Cuticle transversally annulated and punctated. Lateral differentiations with larger transversal rows of dots. Four longitudinal files of three to four sublateral cervical setae. Inner labial sensilla sentiform, 4.5 uμm long. Outer labial (10-13 um long) and cephalic sensilla (8-10 um long) in one circle.
• Amphideal fovea multispiral with 4.5 turns, 13-15 um in wide
•  Buccal cavity conical, with 12 cuticularized rugae, a distinct large dorsal tooth and two small subventral teeth.
• Pharynx cylindrical, slightly broadened at base. Nerve ring at 30-50 um from the anterior end. Excretory pore 91-1 2um from anterior; cardia small.
•  Tail 764-785 μm, conical with much elongated flagellum; three caudal gland cells in the conical part.

Longicyatholaimus longacauda. (a) Lateral view of female head; (b) lateral view of male anterior; (c) lateral view of male posterior (Scale bar: 50 um) Drawings from Huang and Guo, 2022

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Distribution:

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Feeding:

Probably epistrate microbial feeders

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Biology and Ecology:

Free-living marine nematodes

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Life Cycle:

Ecophysiological Parameters:

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Ecosystem Functions and Services:

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Management:

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References:

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Revised by Howard Ferris: August 19, 2026.