Eudorylaimus confusus
Thorne, 1974
Photo Gallery- Haughton Crater

1.2 mm; a = 26; b = 3.4; c = 31; V = 63
Body practically striaght.  Lip region angular, set off by constriction.  Lateral field 1/4 body width.  Spear 17u long with aperture occupying 1/3 its length.  Esophagus enlarged near middle by rather abrupt expansion.  Esophageal glands arranged similar to those of Aporcelaimellus, the anterior pair being separated by a distance about equal to width of esophagus.  Very little evidence of a cardiac disc, the cardia elongate-conoid with intestinal cells almost conpletely surrounding it. Vulva longitudinal with moderately sclerotized labia.  Vagina cylindroid, extending half way across width.  Ovaries reflexed half way to vulva.  Eggs 1 1/3 times as long as body width.  Prerectum slightly longer than body width, sometimes with a slight posterior extension.  Tail with a very slightly digitate bluntly rounded terminus.  Cuticle of tail with easily seen radial striae.  Males not collected.

Eudorylaimus confusus is distinguished by Eudorylaimus-like spear and rather abruptly expanded esophagus and by the Aporcelaimellus-like arrangement of the anterior pair of esophageal gland nuclei.  Also the bluntly rounded, subdigitate terminus.

Habitat:  A widely distributed species from cultivated, prairie and windbreak soils from Boulder, Colorado to Hadashville, Manitoba, Canada.