Abstract
A new species of the genus Basiria Siddiqi, 1959 is described from the rhizosphere of peanut, Arachis hypogaea L. in Ndop, North West Province, Cameroon. B. paratumida n. sp. is characterised by its well-developed, anteriorly-situated median bulb, dorsal oesophageal gland outlet about 2.5 μm posterior to stylet base, a V' value of 75-79%, a tail/V-A value of 0.6-0.7, and a tail distinctly striated along its entire length with a rounded terminus. The new species resembles B. duplexa (Hagemeyer & Allen, 1952) Geraert, 1968 and B. tumida (Colbran, 1960) Geraert, 1968. From B. duplexa, it is distinguished by its shorter body, shorter oesophagus, and shorter, striated tail with a rounded terminus. It differs from B. tumida in its lower V' value, its greater vulva-anus distance and its striated tail which also relates it to B. graminophila Siddiqi, 1959 from which it is distinguished by its more anteriorly-situated median bulb and dorsal oesophageal gland outlet. Morphometric data, descriptions, and illustrations of four known tylenchs, namely, Basiria graminophila; B. tumida; Neopsilenchus minor (Geraert, 1968) Kheiri, 1972; and Filenchus aquilonius (Wu, 1969) Siddiqi, 1986, all recorded for the first time in Cameroon, are given as well as hosts and localities of occurrence.
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