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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Hydrobiologia 102 (1983), S. 39-44 
    ISSN: 1573-5117
    Keywords: Halalaimus ; Nematoda ; taxonomy ; morphology ; postembryonic development
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract During a trans-Saharan expedition in 1980 a number of samples were collected from stagnant and running fresh and slightly saline water bodies. One of them, collected from the Oued En-Namous in a small oasis yielded several interesting nematodes, among which was a newHalalaimus species described herein asHalalaimus algeriensis n. sp. It comes close toH. minusculus Tchesunov, 1978, but differs in tailshape, absence of males and habitat. It also resembles the marine speciesH. gracilis de Man, 1888, but differs in the relative length of the anterior setae, the absence of a lateral field and absence of males. The new species can be differentiated fromH. stammeri Schneider, 1940, the only fresh water species found hitherto, by its shorter body, more anterior and wider fovea, and the length and position of the anterior setae. The various juvenile stages can be separated on the basis of body length, foveal length and genital primordium.
    Type of Medium: Electronic Resource
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