Fig. 4From: Free-living nematode species (Nematoda) dwelling in hydrothermal sites of the North Mid-Atlantic Ridge Oncholaimus scanicus, male posterior structures. a Male, posterior end (Lost City, st. 4890); b spicules tip and preanal supplementary organ (Lost City, st. 4890). Scale bars a 100 μm; b 10 μmBack to article page