Genus Paratylenchus
Micoletzky, 1922
Syn.: Cacopaurus Thorne, 1943
Definition: Paratylenchinae.
Small nematodes, under 0.5 mm. long. Female may swell slightly
and become sessile parasite. Head conical or rounded, usually without
annules, rarely offset in any way. Spear strong, variable in length
but may be relatively very long, fore part longer than shaft; basal knobs
rounded. Procorpus and median bulb amalgamated, containing
large crescentic valve plates. Isthmus narrow but relatively long,
leading to a rounded or spathulate terminal bulb. Body distinctly
annulated; lateral field usually with 4 incisures. Vulva posterior,
protected on either side by a membrane of cuticle; leading into a vagina
which stretches halfway or more into the body. Uterus composed of
a number of large cells, sometimes with an open chamber adjoining the vagina;
a spermatheca, packed with sperms, present apparently as a diverticulum
of the upper end of the uterus. Ovary outstrectched, prodelphic;
no post-vulval sac. Anus often obscure, tail conical to a variously
shaped point. Body becomes C-shaped when killed by heat. Male
more slender, spear and oesophagus usually faint and ill-defined or non-existant.
Spicules long, slender and pointed; gubernaculum short. At the anus
a short sheath usually protrudes, which may have a process at its posterior
edge. Tail with slight or without bursa. Male tail conoid to
a variously shaped point.
Type species: Paratylenchus bukowinensis Micholetzky, 1922
-Goodey, 1963
This
genus included in the Criconematid Project
DNA Sequences Obtained:
Specimen:
Collected:
| 14283 |
La Selva Biological Sta., Costa Rica |
Species found: at:
Species
List (from Ebsary, 1991)
