Cobb, 1913
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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
| Specimen: | Collected: |
| 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 |
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