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Observations On Species of the Genus Iotonchium Cobb, 1920 *)

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image of Nematologica
For more content, see Nematology.

Iotonchium macrospiculatus (Meyl, 1954) n. comb., I. cephalostrictum and I. mycophilum are redescribed from Meyl's original specimens. They conform to the characters of Iotonchium as set out by T. Goodey (1953). Additional characters of the genus are: (I) that the pre-adult male larva is precocious in having spicules and a fully developed gonad but no bursa; (2) the radially symmetrical head of the larval male becomes tri-lobed and flattened dorso-ventrally at the final moult; (3) no ducts from oesophageal glands can be seen, in either sex, to join the lumen of the oesophagus.

Affiliations: 1: (Nematology Department, Rothamsted Experimental Station, Harpenden


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