Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Description of two new species - Helicotylenchus siddiqii n.sp. and Paratylenchus (Paratylenchus) karachiensis n. sp. (Nematoda: Tylenchida) from Sindh, Pakistan.

Abstract

Two new species, Helicotylenchus siddiqii n.sp. and Paratylenchus (Paratylenchus) karachiensis n.sp. are isolated from chilli plants cultivated in Sindh, Pakistan and described and illustrated here. Helicotylenchus siddiqii n. sp. comes close to H. abunaami Siddiqi, 1972; H. craigi, Knobloch and Laughlin, 1973; H. densibullatus, Siddiqi, 1972 and H. gerti, Marias et al., 2005 on the basis of head rounded with three indistinct annules, stylet length and basal knobs anteriorly flattened and concave, mucronate tail and male absent on many of the morphological characters. Paratylenchus (P) karachiensis n. sp. comes close to P. (P.) bukowinensis Micoletzky, 1922, P. (P.) curvitatus Van der Linde, 1938, P. (P.) dianthus Jenkins and Taylor, 1956, P. (P.) halophilus Wouts, 1966, P. (P.) projectus Jenkins and Taylor, 1956, P. (P.) rotundicephalus Bajaj, 1987 on the base of stylet length, four lateral incisures and vulval flap. These species are new to science for the world.