Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

The genera Basiria Siddiqi, 1959, Neopsilenchus Thorne & Malek, 1968 and Filenchus Andrássy, 1954 (Nematoda: Tylenchidae) from Cameroon, with a description of Basiria paratumida n. sp.

Abstract

A new species of the genus Basiria is described from the rhizosphere of groundnut, Arachis hypogaea in Ndop, North West Province, Cameroon. Basiria paratumida sp. nov. is characterized 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 and B. tumida. From B. duplexa, it is distinguished by its shorter body (705 µm), shorter oesophagus (115 µm), and shorter (75 µm), 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 from which it is distinguished by its more anteriorly-situated median bulb and dorsal oesophageal gland outlet. Morphometric data, descriptions, and illustrations of 4 known tylenchs, namely, Basiria graminophila; B. tumida; Neopsilenchus minor; and Filenchus aquilonius, all recorded for the first time in Cameroon, are given as well as hosts and localities of occurrence.