Vol. 6, Issue 1, Part A (2024)

Known species of plant-parasitic nematodes belonging to the family Criconematidae were identified for the first time during a survey in Misan Province, located in southern Iraq. This study examines and illustrates the morphometric and morphological traits of Iraqi populations of the rediscovered species. It is based on morphological and morphometric data, as well as essential qualities that can aid in taxonomic classification. The Iraqi population of Criconematoides informis is characterized by having a R value of 77-79, Rst value of 10-12, VL/VB ratio of 1-1.3, a value of 9.4-10.6, body length ranging from 495.8-560.2 μm, stylet length ranging from 72.2-80.2 μm, labial disc slightly elevated and directed anteriorly, vulval lips bulging but not protruding above the body contour. The morphometric and morphological characteristics of the species match those found in the original descriptions.