(Cobb in Taylor, 1936) Raski & Luc, 1987
|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. (Neocrossonema) fimbriatum
(Cobb in Taylor, 1936) Siddiqi, 1986
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)
species included in the Criconematid Project
DNA Sequences Obtained
||Niobrara River, NE