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Five new and two known species of the family Dorylaimidae (Nematoda: Dorylaimida) from Costa Rica

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For more content, see Nematologica.

Five new and two known species of dorylaim nematodes belonging to the family Dorylaimidae are described and illustrated from Costa Rica. Prodorylaimus paraobesus sp. n. has 1.5-1.9 mm long body; lip region offset by a depression; 35-38μm long odontostyle with thick walls; 'double' guiding ring; transverse vulva and elongate-conoid, dorsally bent tail. Laimydorus esquiveli sp. n. has 1.6-2.1 mm long body; lip region offset by slight depression; 30-32μ m long odontostyle; 'double' guiding ring; longitudinal vulva; males with 12 ventromedian supplements and prerectum terminating within the range of supplements. Laimydorus tropicus sp. n. has 1.5-1.9 mm long body; lip region truncate, offset by depression; 'double' guiding ring; transverse vulva; female tail 14-15 anal body diam. long; male with ten ventromedian supplements and prerectum terminating within the range of supplements. Calcaridorylaimus andrassyi sp. n. has 1.7-1.8 mm long body; slightly offset lip region; 15μm long odontostyle; pore-like vulva and spicules with triple contour and much shorter ventral arm. Coomansinema brevicauda sp. n. has 1.3-1.6 mm long, robust body; 21-22μ m long odontostyle; transverse vulva; short conoid female tail with an elongate dorsally bent projection and male with ten ventromedian supplements. Mesodorylaimus guarani Andrássy, 1968 and Sicaguttur hooperi Carbonell & Coomans, 1986 are reported for the first time from Costa Rica.


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