Mesodorylaimus recurvus
Thorne, 1974
Measurements (from Thorne, 1974)
L = 1.8-2.1 mm; a = 40; b = 4.8; c = 32-46; V = 53
Description (from Thorne, 1974)
Body
distinctly arcuate when relaxed. Lateral field 1/4 body width.
Lip region rounded with slightly elevated papillae. Spear
15
um long, the aperture occupying 1/3 its length. Esophagus
enlarged near middle by gradual expansion. Cardia elnongate-conoid,
varying in length from 1/2 to more than 1 body width. Intestinal
granules excessively fine, dark brown. Microvilli not observed.
Ovaries reflexed 3/4 way to transverse
vulva. Eggs twice as long as body width. No spermatheca
or sperms present in gravid females indicating that males do not occur.
Rectum length 1 1/2 times anal body diameter. Prerectum length twice
body width. Tail
slightly bent dorsally.
Mesodorylaimus recurvus is distinctive because
of transverse vulva, arcuate body, gradual expansion of esophagus and spicate,
dorsally bent tail.
Habitat: Three females from prairie sod near
Tagus, North Dakota.
Of special interest are the two additional gland
nuclei located near the dorsal one, making a total of seven. A similar
number is reported for Laimydorus incae. There are disturbing
similarities between this species and Laimydorus reversus.
DNA Sequences Obtained
Speciemen: |
Collected: |
KonzaI AD-37 |
Konza Prairie, First Survey |