Tyleptus		Contents		Rev 06/15/2023
		Classification		Biology and Ecology
		Morphology and Anatomy		Life Cycle
Return to Tyleptus Menu				Ecosystem Functions and Services
		Distribution		Management
Return to Leptonchidae Menu		Feeding		References
		Go to Nemaplex Main Menu		Go to Dictionary of Terminology

Classification:

Type species of the genus: Tyleptus parvus Thorne, 1939

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Morphology and Anatomy:

• Body cylindroid, length 0.5-1.5 mm
• Outer cuticle smooth or with microscopic transverse striae.
• Subcuticle with refractive radial elements or with transverse striae.
• Lateral cords with 2 lines of coarse ducts reaching to the lateral pores.
• Lip region offset from body contour with six conspicuous, projecting liplets around the oral opening.
• Odontostyle dorylaimoid, short and thick,
• Odontophore simple or flanged, strongly sclerotized, surrounded by conspicuous muscles.
• Guiding ring simple.
• Esophagus a slender tube until it expands to the pyriform  valved basal bulb. Bulbar lumen in 2 sections, the posterior one forming a narrow, triquetrous, valvular chamber.
• Tail rounded or conoid

• The genus Tyleptus differs from Leptonclius Cobb, 1920, Proleptonchus Lordello, 1955 and Tylolaimophorus de Man, 1880 in the simple guiding ring and the duplex lumen of the esophageal bulb.
• From Leptonchus and Tylolaimophorus it further differs in being monodelphic, and from Proleptonchus in having the ovary posterior to the vulva, not anterior (opisthodelphic rather than prodelphic)..

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Distribution:

Terrestrial nematodes with species reported from asia, Africa, North and South America. (Andrassy, 2009)

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Feeding:

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Biology and Ecology:

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Life Cycle:

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Ecosystem Functions and Services:

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Management:

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References:

Andrassy, I. 2009. Free-living Nematodes of Hungary (Nematoda Errantia) Vol. 111. Humgarian Natural History Museum, Budapest. 508p.

Heyns, J. 1963. Five new species of Leptonchidae (Nemata: Dorylaimoidea) from South Africa. Proc Helminth. Soc. Washington 30:7-15.

Thorne, G. 1939. A monograph of the suerfamily Dorylaimiodea.  Capita Zoologica 8, 261pp.

Yeates, G.W., T. Bongers, R. G. M. De Goede, D. W. Freckman, and S. S. Georgieva. 1993. Feeding habits in soil nematode families and genera—An outline for soil ecologists. Journal of Nematology 25:315-331

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Copyright  1999 by Howard Ferris.
Revised: June 15, 2023.