(Cobb, 1906) Thorne & Swanger, 1936
Syn.: Dorylaimus bulbiferus Cobb, 1906
Discolaimus bulbiferus Thorne and Swanger, 1936
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)