Aphelenchoides koreanus n. sp. (Tylenchina: Aphelenchoididae) found in packaging wood from South Korea

Abstract

Aphelenchoides koreanus n. sp. isolated in Ningbo Port, P.R. China, from Pinus packaging wood from South Korea is described. It is characterised by the female length of 603 (511-687) μm, stout body shape (a = 24.4 (21.9-26.7)). The lateral field has four incisures. The slender stylet is 12.3 (11.7-13.4) μm long and has small basal swellings. The excretory pore is located posterior to the nerve ring. The hemizonid is immediately posterior to excretory pore, but sometimes invisible. The vagina is not sclerotised, and the vulva has strongly protruding lips and lacks a flap. The PUS is well developed and forms ca 30.6-41.9% of the vulva to anus distance. Tail sub-cylindrical, terminus bluntly rounded or slightly pointed, always bearing a very short mucron or a small projection, about 1 μm long. Males absent. The new species belongs to the group 1 category of Aphelenchoides species sensu Shahina. Phylogenetic analysis based on ITS sequences confirmed its status as a new species.