Nevadanema nevadense




Rev 01/02/2020

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Nevadanema nevadense Alvarez-Ortega & Pena-Santiago, 2012

N. nevadense is the type-species of the genus.

Originally described in Qudsianematidae and later transferred to Dorylaimidae, sub family Labronematinae.

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Morphology and Anatomy:


  • Genital system didelphic-amphidelphic, both branches equally well developed.
  •  Ovaries usually large, often extending beyond sphincter level.
  • Oocytes arranged first in two or more rows, then in a single row.
  • Oviduct 1.4-2.4 times corresponding body diam.,
  • Oviduct-uterus junction surrounded by a sphincter. Uterus a simple tube 1.1-1.8 times the corresponding body diam.
  • Vagina extending inwards 334-56% of body diam., pars proximalis with somewhat sigmoid walls and surrounded by weak musculature, pars refringens with two distinct, triangular pieces separated by a less refractive intermediate area,  pars distalis short.
  •  Vulva a very short, almost equatorial, longitudinal slit, opening partially covered by two lateral flaps.
Males:  Unknown - but sperm observed in uteri of a few 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 from Sierra Nevada National Park in Andalucia, Spain.

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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 nevadense gen. n., sp. n. (Qudsianematidae) from Sierra Nevada National Park. Nematology 14:249-264.

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Copyright 1999 by Howard Ferris.
Revised: January 02, 2020.