Description: Only females were found. The body is
straight or slightly curved ventrally. The head is comprised of two
annules which are more or less offset from the following body annules.
The second head annule is larger than the first. The four small sublateral
lobes are fused into a dorsal pair and a ventral pair. The dorsal
pair of sublateral lobes are connected laterally along the margins of the
labial disc to the ventral pair. A typical criconematoid esophagus
is present. The ovary is single and outstretched. A sperm-filled
spematheca is located in the anterior portion of the uterus. The
vulva is "closed" and the vagina is straight. There is no projection
of the anterior vulva lip.
Type habitat and locality: Holotype-female collected June 1972 around roots of Tilia americana L. within Pammel Woods located on the northwest border of the Iowa State University campus, Ames, Iowa.
Diagnosis: This species possesses the characteristics of Criconemoides as envisioned by Loof and DeGrisse (1967) in that it has the sublateral lobes partially fused to nearly form another head annule, and has a "closed" vulva. By virtue of the aforementioned characteristics, Criconemoides inusitatus is related to C. humilis Raski and Riffle, 1967, C. vernus Raski and Golden, 1965, C. amorphus De Grisse, 1967, and C. informis (Micoletzky, 1922) Taylor, 1936. This species differs from C. humilis in that the latter does not have offset head annules. Criconemoides inusitatis differs from C. vernus and C. amorphus in that the latter two nematodes have longer stylets and conical tail shapes, and it differs from C. informis in its shorter stylet length and greater number of body annules.
(Description- Hoffman, 1974)
DNA Sequence Obtained
|Pammel-03||Pammel Woods, Ames Iowa|
|Pammel-01||Pammel Woods, Ames Iowa|
species included in Criconematid Project