Morphological Characteristics of Hoplolaimus indicus Sher, 1963 in Canada, a Parasite of Wild Rice
AbstractHoplolaimus indicus Sher, 1963 was found for the first time in North America as a parasite of wild rice. Supplemental descriptive data, supported by illustrations, are given which extend the known range of variability in this species. The body, stylet, and tail lengths were often greater than those in published reports from India, the esophageal gland overlap was consistently shorter than body width in most specimens, and the excretory pore and vulva were more posterior. Longitudinal striae of the basal head annule ranged from 6 to 20, number of tail atmules from 8 to 22, and the excretory pore extended at most 27 [mu]m anterior or 22 [mu]m posterior of the esophagointestinal valve. A taxonomic key is provided to facilitate the separation of the 13 species of Hoplolaimus having five or six esophageal gland nuclei. Key words: taxonomy, morphology.
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