Scutellonema

Scutellonema	Contents	Rev 12/04/2012
spiral nematodes	Classification	Hosts
	Morphology and Anatomy	Life Cycle
Return to Scutellonema Menu	Economic Importance	Damage
	Distribution	Management
Return to Hoplolaimidae Menu	Feeding	References

Classification:

          Tylenchina
         Tylenchoidea
          Hoplolaimidae
           Hoplolaiminae
           Scutellonema (Andrássy, 1958)

    Synonyms:

      None.

Back to Top

Morphology and Anatomy:

Female: Body spiral to C-shaped or almost straight.

Labial region narrow truncate to offset rounded; annulated, with or without longitudinal striae. First labial annule divided into six sectors, lateral sectors smaller than the others (SEM).

Amphid apertures oval between labial disc and lateral sectors.

Lateral field with four lines usually areolated near phasmids and anteriorly, sometimes transverse striae scattered over whole field.

Labial framework, stylet, and stylet knobs average-sized for the family; knobs rounded to indented.

Dorsal esophageal gland opening 4 to 8 µm from stylet base.

Esophageal gland overlap dorsal and lateral.

Two genital branches outstretched, equally developed.

Epiptygma present.

Tail short, rounded.

Phasmids enlarged, 3-4 µm in diameter, just pre-anal. Term "scutellum" refers to Latin "shield" for shape and size of phasmids - hence Scutellonema.

Males: Caudal alae enveloping tail tip, regular or, rarely, deeply lobed.

No secondary sexual dimorphism.

[Ref: Fortuner, (1987), and H. Ferris.]