Longidorus balticus sp nov (Nematoda : Longidoridae) from coastal sand dunes in northeast Poland

A description is provided of Longidorus balticus sp. nov., a bisexual speci es recovered from the rhizosphere of Elymus arenarius L. growing in coastal sand dunes in northeast Poland. The species is characterized by having a l ong (L=6.7-9.2 mm) and slender (a=119-175) body; expanded labial region, fl attened anteriorly, assymetrically bilobed amphids; anteriorly situated gui de ring (23-29 mum); odontostyle of medium length (91-105 mum); and a short , rounded tail. Males having spicules of medium size (58-69 mum), and a row of 9-15 supplements. Longidorus balticus sp. nov, has four juvenile develo pmental stages. Longidorus balticus sp. nov, resembles L, vineacola, L. bel loi, L. lusitanicus, L. moesicus, L. profundorum and L. apulus.