Tigronchoides andrassyi sp. nov. (Nematoda: Anatonchidae), New Mononch with Longitudinal Vulva From Baltic Coastal Dune in Poland

Abstract. Tigronehoides andrassyi sp. nov. from Baltic coastal dune in Poland is described and illustrated. New species is characterized by medium body length (females 2.25–2.65 mm, males 2.27–2.72 mm), spacious buccal cavity (females 57.1-60.0 × 49.3-53.9 µm, males 49.5-52.4 × 41.2-43.3 µm), relatively high position of teeth apices (females 29.2–33.6%, males 39.9–42.5% ), longitudinal vulva with clearly separated sclerotizations, short and evenly tapered tail with cone-shaped posterior part.