|Criconema serratum Khan & Siddiqi, 1963
Lobocriconema serratum (Khan & Siddiqi) De Grisse & Loof, 1965
Criconemoides serratum (Khan & Siddiqi) Raski & Golden, 1966
Ogma serratum (Khan & Siddiqi) Raski & Luc, 1987
Ogma (Homogma) serratum (Khan & Siddiqi, 1963) Siddiqi, 1986
Paralobocriconema serratum (Khan & Siddiqi) Minagawa, 1986
Criconema sulcatum Golden & Friedman, 1964
Lobocriconema sulcatum (Golden & Friedman) De Grisse & Loof, 1965
Criconemoides sulcatus (Golden & Friedman) Raski & Golden, 1966
Ogma (Homogma) sulcatum (Golden & Friedman) Siddiqi, 1986
Photo Gallery- Nebraska nursery
DESCRIPTION: Body relatively stout, tapering gradually at both extremities.
Head with one prominent cephalic annule, directed forward and outward,
which is followed anteriorly by the sub-lateral lobes around the labial
protuberance. First body annule either directed outward of retrorse;
succeeding body annules retrorse, averaging about 15 microns apart.
In profile, anterior body annules rounded at their edges, becoming increasingly
pointed toward the posterior end of the nematode. Cuticular scales
in 12 longitudinal rows, wider than long; the anterior ones rounded and
less prominent than the posterior ones which become longer and irregular
in shape. Edge of first annule smooth. Posterior edge of succeeding
annules and scales crenate. Cuticle of annules with shallow longitudinal
strong, extending through 6-8 annules, with forward pointing knobs.
Dorsal gland opening about 6 microns from base of stylet. Excretory
pore 12-15 annules from the anterior end, and 1-4 annules posterior to
the base of the esophagus. Ovary single, very long, may extend past
the base of the stylet. Vulva 4-8 annules from the terminus.
Anus not seen clearly. Terminus with 1 or 2 knobs.
LARVAE: Cuticular scales markedly different from those of the female. First annule crenate. Succeeding annules with scales arranged in 8 longitudinal rows. Each scale with about 6 small rounded protuberances laterally, one anteriorly and one posteriorly.
DIAGNOSIS: Criconema differing from other closely related described species principally by single scales or spines arranged in 12 longitudinal rows and by the presence of 34-46 annules with each body annule bearing many longitudinal grooves.
HOLOTYPE: (female): Collected by C. S. Tuthill on November 17, 1958 at Uniondale, Long Island, New York. Slide T-42t, United States Department of Agriculture Nematode Collection, Beltsville, Maryland.
PARATYPES: (Approximately 200 females and larvae): Specimens deposited in United States Department of Agriculture Nematode Collection, Beltsville, Maryland; University of California Nematode Survey Collection, Davis, California; and Canadian National Collection of Nematodes, Ottawa, Canada.
TYPE HABITAT, HOST AND LOCALITY: Soil and roots of Chrysanthemum sp. at Uniondale, Long Island, New York.
(Description- Criconema sulcatum Golden and Friedman, 1964)
This species included in the Criconematid Project
DNA Sequences Obtained