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A new species of Tylenchorhynchus Cobb, 1913 from Paraguay, T. shimizui n. sp., and T. leviterminalis Siddiqi, Mukherjee & Dasgupta, 1982 from Japan are described and illustrated. T. shimizui n. sp. is a monosexual species characterised by females with a medium-sized body, L=0.70-0.82 mm, stylet 18.4-20.8 μm long, a rounded lip region slightly set off from the body contours bearing six annules,...
Macroposthonia napoensis n. sp. and M. planilobata n. sp. from Ecuador are described and illustrated. Differential characters of M. napoensis are: first annule with four enlarged submedian lobes but not giving the lip region a disc–like appearance , vagina sigmoid, none or very few anastomoses, a poorly–developed spermatheca, L = 0.33–0.42 mm, V = 89–93, stylet = 55–74 µ and R = 73–79. M. planilobata...
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