This document was constructed and
is maintained by KHUONG
Entomology and Nematology Department
University of Florida
Order Rhabditida (After Maggenti, 1991)
The number of labia varies from a full complement of six to three or
two or none. The tubular stoma may be composed of five or more sections
called rhabdions. The three-part esophagus always ends in a muscular bulb
that is invariably valved. The excretory tube is cuticularly lined and
paired lateral collecting tubes generally run posteriorly from the excretory
cell; some taxa have anterior tubules also. Females have one or two ovaries;
when only one is present the vulva shifts posteriorly. The cells of the
intestine may be uninucleate, binucleate, or tetranucleate. The hypodermal
cells may also be multinucleate. Caudal alae, when present, contain papillae.
There are two suborders: Rhabditina and Cephalobina.
Stoma cylindrical and devoid of distinct rhabdions. Its length
generally two or more times as long as its width. Labial region usually
distinct with cephalic papillae and porelike amphids. Esophagus four-part,
basal bulb muscular and valved . Females with one or two ovaries.
Males usually with paired spicules, and a gubemaculum. Caudal alae are
common on males.
Three superfamilies are recognized: Aloionematoidea, Rhabditoidea, Bunonematoidea.
|Some Morphological Characters|
|Classification of the suborder Rhabditina|
|Rhabditina, Generic Identification|
Other websites of the author:
1- Florida Nematology
2- Taxonomy of Entomopathogenic Nematodes
3- Mole Cricket Control by Entomopathogenic Nematodes
4- Symbiotic Bacteria of Entomopathogenic Nematodes
5- Rhabditida: Rhabditina Generic Identification
6- Diplogasterida, Generic Identification
7- Rhabditida, Cephalobina, Generic Identification
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