Heyns, 1968
Syn.: Nygolaimus (Aquatides) christei Heyns, 1968
|
|
Description (from Thorne, 1974)
Body
slightly arcuate, tapering at extremities. Lateral field 1/6 body
width.
Lip region asymmetrical with ventral side lower than dorsal.
Lips rounded with easily seen papillae. Amphids cup-shaped, 2/5 width
of head. Tooth elongate, deltoid, about 22 um long. Esophagus
expanding gradually until posterior 2/3 fills body cavity.
Cardia
elongate
conoid, with 3 usually well developed glands. Intestinal cells packed
with small dark brown granules. Prerectum length 1 1/2 times body
width. Rectum slightly longer than anal body diameter. Vulva
transverse with muscular labia and vagina. Uteri usually packed with
sperms.
Male somewhat more arcuate in posterior portion
with 50-60 conspicuous diagonal copulatory muscles. Supplements
4-6,
low, flattened. Spicula massive with cephalated guiding pieces.
Spermatozoa unusually large and conspicuous. Prerectum length about
3 times body width.
Aquatides christei is distinctive because
of the asymmetrical lip region, convex-conoid elongate hemispheroid tail
and form of vagina. These specimens differ from those reported by
Heyns in having rounded lip region not set off by slight expansion as in
type specimens.
Habitat: Recently plowed pasture just east
of Minden, Nebraska.
DNA Sequences Obtained
| Specimen: | Collected: |
| Konza IAD-54 | Konza Prairie, first survey |
| Konza IIAC-02 | Konza Prairie, first survey |
| KonzaII AA-18 | Konza Prairie, first survey |
 |
 |
