Nevadanema fimbriatum




Rev 06/16/2023

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Morphology and Anatomy Life Cycle
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Nevadanema fimbriatum (Thorne, 1939) Alvarez-Ortega & Pena-Santiago, 2012


Labronema fimbriatum Thorne, 1939

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Morphology and Anatomy:

Note: Lip region and odontostyle morphology very similar to that of Nevadanema nevadense and quite different from those of the genus Labronema


  • Genital system didelphic-amphidelphic, both branches equally well developed.
  • Uterus with abundant sperm..
  • Vagina extending inwards 40% of body diam.
  • Vulva a post-equatorial, longitudinal slit.
  • Two or three minute, irregular, notched membranes present near vulva.
Males:  Unknown, but note that sperm observed in uteri of all female specimens.

Ref: adapted from Alvarez-Ortega and Pena-Santiago, 2012


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



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Described by Thorne (1939)  from the  type locality, Bald Mountain, Uinta Range, Utah, USA, where it was collected in soil
around roots of alpine plants, at an elevation of about 3200 m a.s.l.

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  Labronema and other Labronematinae designated omnivore-predator by Yeates et al (1993). 

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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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Alvarez-Ortega, S., Pena-Santiago, R. 2012. Nematodes of the order Dorylaimida from Andalucia Oriental, Spain. Nevadanema fimbriatum gen. n., sp. n. (Qudsianematidae) from Sierra Nevada National Park. Nematology 14:249-264.

Thorne, G. 1939. A monograph of the nematodes of the superfamily Dorylaimoidea. Capita Zoologica 8, 1-261.

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Copyright 1999 by Howard Ferris.
Revised: June 16, 2023.