Description of Ektaphelenchus taiwanensis sp. n. (Nematoda: Ektaphelenchinae) found in packaging wood from Taiwan

Abstract

Ektaphelenchus taiwanensis sp. n. is descdbed and figured. The new species was isolated from pine packaging wood from Taiwan and inspected in Ningbo harbour, China, in 2009. Ektaphelenchus taiwanensis sp. n. is charactedsed by the lip region lacking a clear constdction separating it from the body contour, stylet relatively short (12-17 /xm) and without basal knobs, and presence of three lines in the lateral field. The female post-uterine sac is less than a body diam. long, the rectum and anus are absent and the tail is conoid with a sharply pointed terminus. The male tail is conoid and has a hair-like mucron (0.5-2.5 ßm), the spicules are mitten-shaped, 12.5-14.4 ßm long (chord) and are smoothly curved with a prominent rounded condylus, prominent pointed rostrum, and broadly rounded distal end. There are three pairs of subventral caudal papillae. Ektaphelenchus taiwanensis sp. n. is similar to E. betulae, E. josephi, E. joyceae, E. prolobos, E. propora and E. tuerkorum from which it can be separated by a combination of various morphometdc and morphological characters. The D2D3 LSU and partial SSU region sequences were analysed and aligned using ClustalW implemented in MEGA version 4.0. Phylogenetic trees were generated with the Neighbour Joining (NJ) method using the Tajima-Nei distance option. The feeding habit of the new species is bdefly discussed.

Two Ektaphelenchinae Paramonov, 1964 (Nematoda: Rhabditida) from Iran have tripartite stylet, with similar observations in other species

“…The biology of Ektaphelenchinae Paramonov, 1964 [46] is recently reviewed by Kanzaki and Giblin-Davis [47]. Based upon currently available data on predatory feeding habitat of both genera Devibursaphelenchus and Ektaphelenchus [3, 48], the predatory feeding habit is assumed for presently studied two species too, and the well-developed stylet apparatus of both species could support this hypothesis. It is however surprising that the subfamily has a wide range of feeding type.…”

“…Currently 28 species are placed under the genus Ektaphelenchus Fuchs, 1937 [1] (24 in Hunt [2], plus four recently described species: E . taiwanensis Gu, Wang & Chen, 2013 [3], E . ibericus Gu, Wang, Chen & Wang, 2013 [4], E .…”

Description of Aphelenchoides stellatus n. sp. (Nematoda: Aphelenchoididae) found in packaging wood from Japan

“…have been detected (Gu et al, 2006). However, some species belonging to other genera of Aphelenchoi didae have also been detected from imported wood pack aging materials (Gu et al, 2010(Gu et al, , 2013aWang et al, 2013). Some Aphelenchoides species also have been re ported from pine woods in China (Zhuo et al, 2010), in cluding A. besseyi Christie, 1942, which is listed as a reg ulated pest and characterised by a star-like female tail tip (EPPO, 2004).…”

Basilaphelenchus hyrcanus n. sp. (Rhabditida: Tylaphelenchinae) associated with bark of a beech tree (Fagus orientalis Lipsky) from northern Iran

“…Multiplication of three species out of six nominal species on fungus medium strongly supports mycophagy hypothesis for this genus. Moreover, the other aphelenchid genera described in association with insects are considered to have either predatory habits as in Ektaphelenchus Fuchs, 1937 ( Golhasan et al, 2019a ; Gu et al, 2013 ; Miraeiz et al, 2017 ) and Ektaphelenchoides Baujard, 1984 ( Golhasan et al, 2019b ; Kanzaki, 2014 ) or mycophagy in Cryptaphelenchus Fuchs, 1937 ( Aliramaji et al, 2019b ). It remains to be determined whether mycophagous Cryptaphelenchus species have insect associations similar to those of Basilaphelenchus .…”