Four new species of Leptonchoidea (Nematoda: Dorylaimida)

Abstract

Basirotyleptus upicus n.sp. is described from soil around the roots of grasses from Uttar Pradesh, India. It is close to B. basiri and B. penetrans but is distinguished by having a longer and narrower body and a longer oesophagus and tail. B. soueastus n.sp. (male unknown) is described from soil around the roots of durin [? Durio zibethinns] trees from Penang, Malaysia. It differs from B. caudatus and B. lieberi, to which it is close, in size of body, odontostyle, odontophore, tail and in the mono-opisthodelphic gonad. Dorylaimoides micoletzkyi is recorded from India for the first time. D. ilyasi n.sp. is described from soil around the roots of Artocarpus heterophyllus from Penang, Malaysia. It is close to D. constrictus and D. brevidens but is characterized by body, oesophagus, spicule, tail and amphidal aperture size and by the position of the vulva. Tylencholaimus innebus n.sp. (male unknown) is described from soil around the roots of mosses and ferns from the Jhoolaghat hills, Uttar Pradesh, India. It is distinguished from T. teres and T. crassus, to which it is close, by body and oesophagus size, vulva position, the smaller odontostyle and the long filiform tail.