Genus Doryllium

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ORDER DORYLAIMIDA
            Family Leptonchidae
            Genus Doryllium, Cobb 1920

 

 “Definition:  Leptonchidae.  Spear very short, dorylaimoid, with strongly cuticularized extensions which bear flanges or flattened knobs.  Terminal bulb of oesophagus set off by constriction.  Gonad single, posterior.  Testes and spicules dorylaimoid.  Supplements consisting of an adanal pair and a single ventro-median one. Type Species:  Doryllium uniforme Cobb, 1920  syn. Dorylaimus (Doryllium) uniforme (Cobb, 1920) Micoletzky, 1922” From Goodey 1963 and Powers and Mullin website http://nematode.unl.edu/

Tylencholaimellinae. Small nematodes, less than 1 mm long. Lip region continuous or offset by depression or constriction; lips amalgamated, with their inner portion differentiated or not into a perioral disc. Cheilostom a truncate cone, lacking any specialization. Odontostyle relatively short, tubular, with distinct lumen and aperture. Odontophore with basal knobs or flanges. Anterior portion of the pharynx slender and weakly muscular, basal expansion a more or less pyriform bulb, speparated or not from the anterior portion by a constriction. Female genital system mono-opisthodelphic, with the anterior branch absent or reduced to a pre-vulval sac. Male with dorylaimid spicules and only one ventromedian supplement. Tail similar in both sexes: short and rounded.

References:

Goodey T. and J.B. Goodey. 1963. Soil and Freshwater Nematodes.  Butler and Tanner Ltd, London, Great Britain

Powers T. and P. Mullin. Plant and Insect Parasitic Nematodes. University of Nebraska Nematology Website. http://nematode.unl.edu/

Pena-Santiago, R. Freshwater Nematodes Ecology and Taxonomy. CABI Publishing. Page 369.