Hemicycliophora gracilis
Thorne, 1955
Photo Gallery- Barta Bros. Ranch,  NE sandhills
Photo Gallery- Nebraska alfalfa

Female : 1.3-1.7 mm; a = 27; b = 6.1; V 4081
Body with 341-390 annules.  Larval cuticle fitting loosely about body.  Lateral fields marked by 2 longitudinal lines which are obscure on many specimens.  Lip region rounded, with 2 large annules.  Spear length equal to about 30 of the neck annules.  Knobs of spear extending somewhat backward.  Vulva-terminus distance two and one-half times spear length.  Basal bulb of esophagus clavate. Excretory pore about one body width posterior to base of esophagus, its tube leading back about 5 body widths to join the renette gland on the right side of the body.  Hemizonid not observed.  Intestinal cells somewhat vacuolated, containing a few scattered granules.  Ovary sometimes reaching as far as the median esophageal bulb.  Uterus without spermatheca.  Vulva 70 to 80 annules from terminus.  Body slightly contracted posterior to vulva.  Eggs averaging about 30 x 100 u.  Anus very obscure, 20-30 annules behind vulva.  Tail convex-conoid, then spicate.  Annules absent on terminal third of spicate portion.
 DIAGNOSIS.- Hemicycliophora with the above general description.  Distinctive because of the 2 lines on the lateral field, the rounded lip region and the convex-conoid tail ending in a spicate terminus.
 TYPE LOCALITY.-Soil from stream bank, Broad Run, Virginia.  Also collected from a peach orchard near South Haven, Michigan; pine barrens, Monmouth County, New Jersey; grass roots near Raleigh, North Carolina; and about gladiolus corms, Grants Pass, Oregon.  The Oregon specimens were collected by Harold J. Jensen.
(Original Description- Thorne, 1955

0.8 mm; a = 19; b = 5.2; c = 8.4; V = 80
Body nearly straight with relaxed.  Lip region bluntly conoid with 2 obscure striae.  Spear 83 um long, occupying 26 annules.  Uterus with offset pouch which may be a rudimentary spermatheca.  Tail occupying 28 annules.  General morphology as illustrated.
(Description- Thorne, 1968)

This species included in the Criconematid Project

DNA Sequence Obtained
specimen:               collected:
N118058 Barta Bro. Ranch, NE