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 grooves.  Stylet 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

Specimen:	Collected:
150018	Missouri daylilly
124094	Missouri daylilly
124093	Missouri daylilly
238	Nebraska nursery