Description (from Thorne, 1939)
Lip region broadly discoid, generally a little more than half as wide as mid-body. Amphids stirrup shaped. Sensillae about opposite spear base. Cells in lateral cords usually a conspicuous feature of body, 80-85 in number, with distinct ampullae leading to lateral pores. Spear length slightly less than lip region width, aperture occupying about half its length. Esophagus forming an ellipsoidal bulb about junction of spear extension and esophageal lumen, thence to near the nerve ring it is approximately cylindrical. Narrowing as it passes through the nerve ring it soon is enlarged by an abrupt expansion, the posterior three-fifths being irregularly cylindrical. Cardia elongate-hemispherical. Intestine six cells in circumference, its cells containing small, scattered, brown granules. Rectum and prerectum each about as long as anal body diameter. Anterior ovary frequently somewhat shorter than posterior. Supplements 7-11, mammiform, irregular in arrangement, with several ventral cuticular thickenings usually present between them. Spicula thick, slightly arcuate, about as long as tail. Lateral guiding pieces two-fifths as long as spicula. Testes each about twice as long as body width. Male body at supplements slightly clavate.
Discolaimus texanus is easily differentiated from D. similis and D. major by the more anterior location of vulva, length of body and presence of numerous males.
Habitat: Common in cultivated and virgin soil of Western United States. Also from soil about citrus roots, Florence Villa, Florida, U. S. A. and Valencia, Spain.
DNA Sequences Obtained
|KonzaIII CD-147||Konza Prairie, First Survey|
|Konza IIDD-49||Konza Prairie, First Survey|
|9 Mile 12-28 BB1-15||9 Mile Prairie, First Survey|