A new record of Xiphinema dentatumSturhan, 1978 and description of X. paradentatum sp. n. (Nematoda: Dorylaimida) from Serbia. Molecular characterization of Xiphinema dentatum from Serbia

A population of XiphinemadentatumSturhan, 1978 found in a new locality in Serbia is briefly described and illustrated. Xiphinemaparadentatum sp. n. is described and illustrated. It is a parthenogenetic species characterized by its medium to moderate long body (3.71–5.02 mm), assuming an open C-shaped when heat-relaxed, lip region frontally almost flattened, laterally rounded and separated from the rest of the body by a weak depression, a moderately long odontostyle 147-166 µm long, guide ring located at 137-153 µm from anterior end, two equally developed genital tracts having a pseudo-Z-organ in uterus in the form of several unregular angular sclerotized bodies – aphophyses located in the vicinity of the pars dilatata uteri and devoid of spines, tail broadly and symmetrically rounded, and four juvenile developmental stages.Molecular characterization using the ribosomal ITS and the D2-D3 expansion domains of the 28SrRNA gene was carried out and the maximum likelihood analysis was used to reconstruct phylogenetic relationships of X. dentatumand X. paradentatum sp. n. from Serbia with other longidorids.