Ogma fimbriatum
(Cobb in Taylor, 1936) Raski & Luc, 1987
Syn.::
Criconema fimbriatum Cobb in Taylor, 1936
Crossonema (Crossonema) fimbriatum (Cobb in Taylor, 1936) Mehta & Raski, 1971
Crossonema  fimbriatum (Cobb in Taylor, 1936) Khan, Chawla & Saha, 1976
Neocrossonema  fimbriatum (Cobb in Taylor, 1936) Ebsary, 1981
C. (Neocrossonemafimbriatum (Cobb in Taylor, 1936) Siddiqi, 1986

Photo Galleries:
Florida

Maryland
Niobrara River, NE


Cobb (unpublished)
Length, .57-81 mm; a = 6.
     Body tapers most rapidly toward tail, which is convex conoid and pointed, ending in a minute knob.  Head of two annules, definitely set off from rest of body.  First annule mammiliform, bearing a collar-shaped, forward-pointing, transparent membrane.  Second annule rounded.  Cephalic setae four, submedian, very small.  Total number of annules about 53, decreasing slightly in size toward the head.  Width of spines about the same all over body, but length increases from 2 times width near head to to 4 times width on rest of body.  Sides of spines parallel, ends rounded, wedge-shaped in longitudinal section.  About 40 spines to each annule in middle of body, not arranged in definite longitudinal rows.  Middle oesophageal bulb elongated, 1/2 neck width, isthmus of oesophagus 1/4 neck width and very short.  Stylet slender, straight o slightly curved, 96 um long, extending through 15 annules.  Base of stylet rests in posterior portion of middle oesophageal bulb.  Nerve ring surrounds posterior oesophageal bulb obliquely.  Details of intestine obscure.  Anus 5 annules in front of terminus.  Vulva in modified 10th annule in front of terminus; spines lacking on ventral side of this annule, apparently modified to form scale covering vulva.  Uterus extending forward 2 body widths, 1/3 as wide as body in immature specimens.  Ovary straight, 1/3 body width, tapering slowly toward blind end near base of oesophagus.  Excretory pore near 16th annule.  Male unknown, none among 15 specimens.
     Habitat:  Leaf mould fom woods near Mt. Vernon Highway, south of Alexandria, Virginia, U.S.A.  A drawing of this species, prepared by the late N. A. Cobb, was found in the files of the Division of Nematology, Bureau of Plant Industry, U. S. Department of Agriculture with a note giving the habitat as "under pin oak and chestnut, summit of Stony Man, near Luray, Virginia (elevation 4000 feet)."
(Description- Taylor, 1936)

This species included in the Criconematid Project

DNA Sequences Obtained
Specimen: Collected:
N347 Maryland
N314 Maryland
9447 Niobrara River, NE