redescription of steinernema longicaudum shen & wang (nematoda: steinernematidae); geographic distribution and phenotypic variation between allopatric populations.steinernema longicaudum shen & wang is redescribed based on a comparative morphological study of specimens from the type isolate from china, and two other isolates recovered from korea and the usa. for the first and second generation female, the location of the vulva, shape of the vulval lips, and shape and length of the tail were newly observed diagnostic characters. a more detailed description of the morphology of the male spicules and gubernaculum, and the arrangement of the genital papillae ...200111316477
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