Longidoridae and Trichodoridae represent the only families of nematodes within the Class Enoplea proven to be plant-parasitic. The Longidoridae are classified within the subclass Dorylaimia (order Dorylaimida, superfamily Dorylaimoidea), while the Trichodoridae belong to the subclass Enoplia (order Triplonchida, superfamily Diphtherophoroidea). Longidoridae: The family Longidoridae includes som...

Dagger and needle nematodes included in the family Longidoridae (viz. Longidorus, Paralongidorus, and Xiphinema) are highly polyphagous plant-parasitic nematodes in wild and cultivated plants and some of them are plant-virus vectors (nepovirus). The mitochondrial (mt) genomes of the dagger and needle nematodes, Xiphinema rivesi, Xiphinema pachtaicum, Longidorus vineacola and Paralongidorus lito...

Molecular phylogeny of the nematode genus Longidorus (Nematoda: Longidoridae) with description of three new species Carlos Gutiérrez-Gutiérrez, Carolina Cantalapiedra-Navarrete, Miguel Montes-Borrego, Juan E. Palomares-Rius & Pablo Castillo* Institute for Sustainable Agriculture (IAS), Spanish National Research Council (CSIC), Apdo. 4084, 14080 Córdoba, Campus de Excelencia Internacional Agroal...

The male and juveniles of Paralongidorus microlaimus Siddiqi, 1964, are described and the female description emended. A key to the nominal species of the genus is given.

Lectotypes are designated for Longidorus sylphus, L. crassus, and L. fragilis from Thorne's original specimens. Amended descriptions, tables of morphological means, ranges and standard deviations, photographs of the anterior, vulval, and tail regions, and diagnoses and relationships are provided for each of the three species to aid identification and to better determine phylogenetic relationshi...

Longidorus breviannulatus n. sp. was associated with stunted corn in Iowa. The nematode has wide bilobed amphidial pouches, a guiding ring 21-26 mum from the anterior end of the body, an odontostyle 81-88 mum long, and a spear extension 28-45 mum long. The most frequent collections and the greatest numbers of the nematode in the field occurred in sandy soils. Nematodes increased in greenhouse c...

Longidorus crassus is a common species and widely distributed in Arkansas. It was also identified for the first time in samples from Alabama, Iowa, Kansas, Nebraska, South Carolina, Wisconsin, and Canada. It is a parthenogenetic species, but a few males were found and were described herein for the first time. Four developmental juvenile stages were identified. A high degree of intraspecies vari...

A computer program to assist in the identification of nematodes is described. The program has been adjusted for identification of Longidorus species. It is easy to edit in persona1 computer, simple to use and cari be extended to other genera. The program utilises an index that measures the probability that a character is common to tir unidentified specimen and the reference species. The compute...