Five new species under sub-family longidorinae (nematoda) associated with fruit crops from north and North-Eastern India, with comments on the genus Neolongidorus khan, 1986

Taxonomic studies on soil and plant parasitic nematodes around the rhizosphere of fruit crops from north and north-eastern states of India yieled five new species of genera under sub-family Longidorinae viz., Longidorus concavus, L. socialis, L. conicephalatus; Longidoroides lobus and Neolongidorus doonensis are diagnosed and discussed. L. concavus sp.n. is characterized by having moderate body size, narrow elevated, rounded lip region, small asymmetrical amphid; equally developed female gonads with long ovaries; convex conoid rounded tail with two pairs of caudal pores. L. socialis sp.n. is distinctive by having strongly ventral arcuate body with continuous conoid truncate head; pouch like elongate amphid tail three anal body width long with four pairs of caudal pores. L. conicephalatus sp.n. in characterized by having ventrally curved body; asymmetrical bilobed amphid with slit-like aperture, tail convex conoid with subacute rounded terminus. Longidoroides lobus sp.n. is distinctive by having continuous conoid-rounded head; symmetrically bilobed amphidial pouch with slit-like aperture, presence of dorsal and ventral body pores, Hypodermal glands well developed and dorsally conve~almost hemispherical tail. Neolongidorus doonensis sp.n. is characterized by having conoid-rounded head, asymmetrical bilobed amphidia pouch with slit-rounded head, more posteriorly located spear guiding ring; tail short with thic cuticle. The synonymy of the genus Neolongidorus Khan, 1986 with Longidorus by Jianhua Xu & D.J. Hooper, 1990 is not accepted.