Isolaimium papillatum

Isolaimium papillatum	Contents	Rev 06/02/2026
	Classification	Biology and Ecology
	Morphology and Anatomy	Life Cycle
Return to Isolaimium Menu		Ecosystem Functions and Services
	Distribution	Management
Return to Isolaimiidae Menu	Feeding	References
	Go to Nemaplex Main Menu	Go to Dictionary of Terminology

Classification:

Enoplea

Dorylaimia
Isolaimiida

Isolaimiina

Isolaimioidea

Isolaimiidae

Isolaimiinae

Isolaimium papillatum Cobb, 1920

Type species of the genus

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Morphology and Anatomy:

Males 3.8 mm long, females 3.9 mm.
Cuticle thin with surface innervations at edges of lateral field.
Amphid aperture minute and porelike.
Stoma elongate and tubiform with cuticularized walls.
Esophagus cylindrical to clavate; cardium long, cylindrical to pyramidal and dorsoventrally symmetrical.

Female:

Didelphic, amphidelphic, ovaries antidromous;
Vulva near mid body

Ref: Smythe and Hope, 2008

Males:

Spicules simple, blunt, uniform, more or less slender and 1 cbd long
Gubernaculum frail, slender, arcuate, parallel to spicula, and with short caudad apophysis; one-third length of spicula.
Six papilliform, ventromedian supplements sdispersed over pre-cloacal distance equal to 3 cbd.
Tail length slightly greater than 1 cbd, bluntly conoid; ventral and dorsal contours of tail nearly straight and slightly arcuate, respectively.
One subdorsal, one lateral, one ventrolateral and one subventral papilliform sensilla present on each side of tail.

Reported median body size for this species (Length mm; width micrometers; weight micrograms) - Click:

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Distribution:

Reported from soil in mixed hardwood forest on Plummers Island, Maryland, USA. Also reported from foresta in other loactions in North America. (Smythe and Hope, 2008).

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Feeding:

Probably bacterial feeding based on configuration of stoma.

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Biology and Ecology:

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Life Cycle:

Ecophysiological Parameters:

For Ecophysiological Parameters for this species, click	If species level data are not available, click for genus level parameters

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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. Hungarian Natural History Museum, Budapest. 508p.

Heyns, J. and Swart, A. 1988. External morphology of the head region and cuticle of Isolaimium Cobb, 1920 (Nematoda: Isolaimida) Phytophylactica 20:157-159.

Smythe, A.B., and Hope, W.D. 2008. Nematodes of Plummers Island, Maryland. Bull. Biological Society of Washington, 15:13-19.

Timm, R.W. 1961. The systematic position of Isolaimium Cobb, 1920 (Nematoda), with a description of a new species. Journal of the Bombay Natural History Society 58:300-303.

Timm, R.W. 1969. The Genus Isolaimium Cobb, 1920 (Order Isolaimida, Isolaimiidae New Family). Journal of Nematology 1:97-106.

Isolaimium papillatum

Copyright 1999 by Howard Ferris. Revised: June 02, 2026.

Copyright 1999 by Howard Ferris.
Revised: June 02, 2026.