Rev 02/27/2023

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Boreolaimus Andrassy, 1998

Type species of the genus: Boreolaimus borealis Andrassy, 1998

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Morphology and Anatomy:

Andrassy, 1998 assigned the new genus Boreolaimus to the family Qudsianemaridae; and indicated that it differs from orher genera of the family by rhe wide buccal lining around odontostyle, the presence of four esophageal nuclei insread of five and a clear posterior region of the tail.

 The apparent absence of males and of spermarozoa in the uterus of mature females seems also to be a characteristic of the genus.

All known species inhabit interstitial biotopes of lakes and rivers and species described thus far are all from northern regions of the planet. 

The described species are similar to each other but are distinguished by differences in shape and slenderness of body, shape and length of tail, presence or absence of sc!erotizarion in vulval lips, cuticular structure of the tail, and the extent of the clear region as a percentage of the tail length.

Ref. Andrassy, 1998




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

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All known species ithe sands of lakes and rivers and species described thus far are all from northern regions of the planet. 

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  Categorized as omnivores (Yeates et al., 1993).   
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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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Andrassy, I. 1998. The genus Boreolaimus gen. n. and its six species (Dorylaimida: Qudsianematidae), nematodes from the European Arctic. Fundam. appl. Nematoll., 21:553-567.

Andrassy, I. 2009. Free-living Nematodes of Hungary III.  Hungarian Natural History Museum, Budapest. 608p.

Pena-Santiago, R. and S. Alvarez-Ortega. 2014. An integrative approach to assess the phylogeny and the systematics of rounded-tailed genera of the subfamily Qudsianematinae (Nematoda, Dorylaimida). Zoologica Scripta 43:418-428.

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: February 27, 2023.