Description of Longidorus fagi n. sp. (Nematoda, Dorylaimida) with an identification key to the species of the genus occurring in Bulgaria

Longidorus fagi n. sp. is described from Vitosha Mountain, Bulgaria, where it was found in soil around roots of Fagus sylvatica L. The new species is characterised by its medium size, narrow anteriorly rounded lip region which is offset from the body by a very slight depression, large amphidial pouches which are distinctly bilobed at the base, and a conoid-elongate tail which is ventrally curved with a narrow, rounded terminus. L. fagi resembles L. nirulai, L. distinctus, L. curvatus and L. fragilis, An identification key for species of the genus Longidorus present in Bulgaria is provided.