Ptycholaimellus  longibulbus		Contents		Rev: 08/18/2026
		Classification		Biology and Ecology
		Morphology and Anatomy		Life Cycle
Return to Ptycholaimellus  Menu				Ecosystem Functions and Services
		Distribution		Management
Return to Chromadoridae Menu		Feeding		References
		Go to Nemaplex Main Menu		Go to Dictionary of Terminology

Classification:

Chromadorea

  Chromadoria

   Chromadorida

    Chromadoridae

Euchromadorinae

       Ptycholaimellus longibulbus Wang, An & Huang, 2015

    Synonyms:
      

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Morphology and Anatomy:

• Body slender, gradually tapering towards the anterior and posterior end.
• Head slightly round and separated from the rest of the body by a narrow collar.
• Cuticle annulated homogeneous punctuations with lateral differentiation of two longitudinal rows of thick dots along whole body
• Inner and outer labial sensilla inconspicuous; four cephalic setae about 0.5 h.d. long.
• Buccal cavity with a large cuticularized S-shaped hollow dorsal tooth, apical end hook-like
•  Pharynx with an anterior pharyngeal bulb and a well-developed posterior double bulb which togther occupy 44-49% of pharynx length. Nerve ring located at 55% of pharynx length
• Excretory pore opening into head collar. Renette cell very large, baggy-shaped, located at the anterior part of the intestine.
•  Tail about 4.3 a.b.d. long, elongate conical, gradually narrowing, with a long finger-like spinneret. Three caudal glands.

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Distribution:

Reported from intertidal muddy sediment in the East China Sea

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Feeding:

Epistrate and sediment ingestion of micro-organisms

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Biology and Ecology:

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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:

Huang, Y. and Guo, Y. 2022. Free-living Marine Nematodes from the East China Sea. Springer, Singapore and Science Press, Beijing.

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Copyright 1999 by Howard Ferris.
Revised: August 18, 2026.