Photo Gallery- Long' Peak, Colorado
Measurements (from Loof, 1975)
L = 1.72-1.85 mm; a = 20-24; b = 3.7-4.1; c = 30-31; V = 52-55
L = 1.68-1.79 mm; a = 28; b = 3.7; c = 27-28
Description (from Thorne, 1929)
This species is quite generally distributed in mountain soils. About thirty specimens are in the Longs Peak collection, the
females apparently being identical to the type form. However only one male was present whereas males usually are about as
numerous as the females. The tail of this specimen bore thickened areas between the preanal papillae that are not present in
the type form
Posterior half of esophagus enlarged to three-fifths the neck width. Cardia elongate-conoid. Front ovary on the right, the
rear on the left, side of the body; they are reflexed one-half to two-thirds their length. Prerectum twice as long as the rectum.
Description (from Thorne, 1974):
Body very arcuate, tapering gradually from near middle. Lateral fields 1/3 body width, the cells arranged in 2 lines. Pores not seen. Lip region set off by constriction, with elevated, angular papillae. Spear 20 um long with aperture occupying 3/8 its length; about as wide as adjacent cuticle. Guiding ring refractive, supported by a distinct framework anchored to stoma walls. Hemizonid about opposite nerve ring. Posterior 3/5 of esophagus enlarged by irregular expansion. Cardia elongate conoid, 1/3 as wide as esophagus base. Intestinal cells packed with minute granules. Vulva transverse with prominent sclerotized labia. Vagina extending 2/5 across body. Ovaries reflexed halfway to vulva. Eggs 20 x 75 um. Prerectum length 1 1/2 times body width. Tail arcuate to hooked terminus. Two pairs of caudal pores present.
Male tail very arcuate. Supplements 7, spaced a distance equal to twice cuticle width, the series beginning about 1 body width anterior to range of spicula.
Eudorylaimus carteri is distinctive because of the arcuate tail with acute terminus, spear aperture 3/8 its length and arrangement of supplements.
Habitat: Several specimens, both males and females, from swamp area, South Dakota Experiment Station, Brookings. Also 2 females from aspen thicket near St. Annes, Manitoba, collected by L. W. Carlson.
Description (from Choi, Geraert, & Baek, 1997)
Female: Body curved ventrad, especially in posterior half. Lip region offset by constriction. Lips angular, separate, well
developed, with protruding papillae. Amphids goblet-shaped, one-half of corresponding body diameter wide. Odontostyle
slightly longer than width of lip region, the aperture occupying about one-third of its length. Guiding ring single. The nerve
ring surrounds the oesophagus at about 36% of its length from head end. Sometimes, a distinct ventral pore present at about
68-73 um from head end. Cardia subcylindroid, 12X25 um.
Vulva one-half body width deep, the sclerotization being not very distinct. Gonads two, opposed, reflexed. Uteri packed
with sperm. Tail conoid-arcuate with saccate bodies, terminus narrowly rounded. The rectum is 1-1.2 anal body widths
long, prerectum 1.1-2.3 rectum long.
Male: Testes two, dorylaimoid. Spicules dorylaimoid, with lateral guiding pieces. Apart from the adanal pair there is a
series of 6-8 ventromedian supplements, small, spaced, no cuticular elevations between them. The series of supplements
starts well anterior to the head of the retracted spicules. Tail conoid-arcuate, with saccate bodies, terminus narrowly
rounded, showing some papillae.
Discussion. The measurements of the Korean specimens differ somewhat from the original ones and from some reported
redescriptions; female body length shorter than Bastian (1865) and Loof (1975) (1.34-1.65 mm vs. 1.8, 1.72-1.85). "a"
value similar to Bastian (4.3-4.8 vs. 5) but slightly larger than reported by Loof (1975) (4.3-4.8 vs. 3.7-4.1). Spicule larger
than Bastian (49-59 um vs. 51 um) but shorter than Loof (49-59 um vs. 64-65 um).
Localities and habitat: Palgong Mt. (Lindera obtusiloba Blume, Styrax obassia S. et Z.) Namhansansong (Pinus
densiflora S. et Z., Salix koreansis Ander.)
DNA Sequences Obtained
|Mt Rushmore GWN-02||Mount Rushmore Nat'l Monument|
|Konza IIIDD-30||Konza Prairie, First survey|
|Konza IIIBB-86||Konza Prairie, First survey|
|Konza IVBD-111||Konza Prairie, First survey|
|Mt Rushmore GWN-12||Mount Rushmore Nat'l Monument|