Eudorylaimus acuticauda
(de Man, 1880) Andrassy, 1959
Syn.: Dorylaimus acuticauda de Man, 1880
Photo Gallery- Homestead Prairie
Photo Gallery- Forensic Nematology

1.6 mm; a = 24; b = 4.5; c = 31; V = 57
1.5 mm; a = 26; b = 4.2; c = 30; T = 57

Bodies of both sexes slightly arcuate, tails usually bent ventrally.  Lateral field about 1/3 as wide as body.  Lip region slightly angular set off by depression.  Spear 16-18u long, the aperture occupying 1/2 its length.  Pharynx about 1/3 head width with refractive guiding ring.  Esophagus enlarged near middle by gradual expansion.  Cardia elongated with details as illustrated.  Vulva longitudinal with vagina as illustrated.  Egg slightly longer than body width.  Ovaries reflexed about halfway to vulva.  Prerectum slightly longer than body width, with short posterior extension.  Male with 13-16 closely spaced supplements.  Spicula arcuate with strong ventral angle and bent guiding pieces.  Tails of both sexes arcuate, acute.

Habitat:  Cultivated fields, Gary, Huron, Aberdeen and native sod, Cottonwood, Bear Butte and other points in South Dakota.  Native sod, Belmont, Rugby and Dunniston, North Dakota; Baker, Montana and southeast of Boulder, Colorado.
(Description- Thorne, 1974)

This species resembles Dorylaimus carteri but is readily distinguished by its relatively shorter tail, by the supplements which begin just opposite the anterior end of the spicula, and by the spear which has an aperture occupying one-half its length.  Esophagus enlarged near middle until two-thirds the neck width; cardia elongate-conoid; female rectum and prerectum each slightly longer than anal body diameter.  Ovaries reflexed about two-thirds the distance back to the vulva; lateral cord one-sixth the body width; supplements 14-18 separated by spaces about twice as wide as the supplements themselves.
Measurements and figures given are from specimens collected near Ogden, Utah.  The type specimens from Holland have a slightly longer esophagus, 29 per cent, and vulva farther back, 58 per cent of total length

Habitat: Small numbers from stream bank soil collected at various points in the Wasatch and Uintah Mountains, U.S.A.  Reported from many localities in Europe.
(Description- Dujardin,      )