Adenophorea

     === Enoplia 
<<===|
     === Chromadoria 

Maggenti, 1991

Containing clade(s): Nematoda

Table of Contents

Introduction

References

Introduction

The oral opening is generally guarded by six lip-like structures. The stoma or buccal cavity may be armed with movable jaws or teeth, fixed teeth, a hollow stylet, or it may be unarmed. The amphids are postlabial and the orifice is variable in shape being porelike, pocketlike, circular, or spiral. The cephalic sensilla (I 6) are setose to papilloid and postlabial to labial in position. Generally, somatic setae, hypodermal glands, and somatic papillae are present. The cells of the hypodermis are uninucleate. The body covering often lacks visible transverse or longitudinal striae. When present the excretory system is single celled and usually lacks a cuticularized duct. Generally there are six or more coelomocytes in the pseudocoelom. Caudal glands (three) are present in select groups. Males generally have two testes and paired spicules with an accompanying gubemaculum. Males also have a single, medioventral series of papilloid or tubular preanal supplements. Rearely do the males have caudal alae. At eclosion most often it is the first-stage juvenile that emerges from the egg. The class is divided into two subclasses: Enoplia and Chromadoria.

References

Maggenti, A.R. 1991. Nemata:  higher classification.  In:  Manual 
          of Agricultural Nematology, W.R. Nickle [ed.]. Marcel 
          Dekker, Inc., New York.

About this page

Page constructed by Marcella Shaver-Adams, madams@unlgrad1.unl.edu.

Correspondence regarding this page should be directed to Tom Powers, at tpowers@unlinfo2.unl.edu.

Page copyright © 1997 Tom Powers and the Society of Nematology Systematics Resources Committee

Last saved 16 July 1997

Title Illustrations

left: head regions, right: tooth region