Steinernema websteri
Cutler & Stock, 2003
Steinernema websteri is a new entomopathogenic
nematode isolated in Beijing, China. Morphological, molecular (28s DNA
sequence and RFLP analyses), and cross breeding tests were used for diagnostic
purposes. Additionally, 28S rDNA sequence data was used to assess phylogenetic
relationships of this new species with other Steinernema spp. Morphological
diagnostic features include: maximum body width (average: 21 um), excretory
pore position (average: 36 um), D% value (average: 31) and E% value (average:
77) of the third stage infective juvenile; excretory pore position (average:
62 um), cloacal body width (avcrage: 37.5 um), tail length (average: 29um),
D% (average: 40) and morphology of spicules and gubernaculum of the first
generation rnale.
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