Discolaimoides bulbiferus
(Cobb, 1906) Thorne & Swanger, 1936
Syn.: Dorylaimus bulbiferus Cobb, 1906
Discolaimus bulbiferus Thorne and Swanger, 1936
Photo Gallery- Homestead Prairie

Cuticle marked by easily visible transverse striae.  Neck cylindroid then conical to the broadly expanded lip region. Amphids escutcheon shaped, two-thirds as wide as head.  Spear length equal to lip region width, the aperture occupying half its length.  Junction of spear extension and esophageal lining surrounded by elongate muscular bulb about one-third as wide as neck.  Anterior esophagus a slender tube enlarged by sudden expansion until two-thirds neck width; this enlarged portion is six to eight times as wide as the tube before enlargement.  Cardia elongate hemispherical, about one-third as wide as body.  Intestine about six cells in circumference, its granules fine, brown and scattered.  Prerectum length twice body diameter.  Rectum slightly longer than anal body diameter.  Vulva transverse, vagina extending one-third across body.  Ovaries symmetrical, reflexed two-thirds distance back to vulva.  Egg length three to four times body width.  Tail dorsally convex conoid to subacute terminus.  Males not observed among about 150 females and no sperms seen in gravid females.

The ellipsoidal esophageal bulb described by Cobb must have been that at base of spear extension as no other is present.

The above description from specimens collected by Dr. Gertrude Cassidy about sugar cane and pineapple roots Ulapalakua, Maui, Territory of Hawaii.

Habitat: Soil about roots of sugar cane and pineapples, Hawaii; citrus trees, Valencia, Spain; date palms, Indio, California; tomato plants, Azusa, California; cotton plants, Sacaton, Arizona; carrots, St. George, Utah; and top soil, Everglades swamp. Zona, Florida, U.S.A.
(Description- Thorne, 1939)