Landcare Research - Manaaki Whenua

Landcare-Research -Manaaki Whenua

FNZ 55 - Criconematina (Nematoda: Tylenchida) - Abstract

Wouts, WM 2006. Criconematina (Nematoda: Tylenchida). Fauna of New Zealand 55, 232 pages.
( ISSN 0111-5383 (print), ; no. 55. ). Published 24 Mar 2006


Sixty-eight species of Criconematina, in 13 genera, are recorded from New Zealand. Sixteen new species are described: Criconema (Criconema) mackenziei sp. nov., C. (C.) makahuense sp. nov., C. (C.) nelsonense sp. nov., Criconema (Nothocriconema) grandisoni sp. nov., Macroposthonia campbelli sp. nov., Ogma alternum sp. nov., O. capitulatum sp. nov., O. catherinae sp. nov., O. inaequale sp. nov., O. mucronatum sp. nov., O. niagarae sp. nov., O. sturhani sp. nov., Syro tribulosus sp. nov., S. glabellus sp. nov., Blandicephalanema inserratum sp. nov., and B. nothofagi sp. nov. Fourteen species introduced from other parts of the world are described from local material and illustrated. Of the endemic species, Pateracephalanema imbricatum is the only species shared with Australia. Because of the predominance of the subgenus Nothocriconemella in New Zealand, the cosmopolitan Criconema (Nothocriconemella) sphagni may be a New Zealand species now spread worldwide.

Siddiqi’s (2000) classification of Criconematina, with 3 superfamilies, is accepted here. Eubostrichus guernei is recognised as a valid species and as the type species of Criconema Hofmänner & Menzel, 1914. In species with ornate cuticles, the type of scale or spine, rather than their orientation on the body, is considered phylogenetically significant. The genus Criconema is redefined, and the genera of the family Criconematidae (Criconematoidea) are rearranged accordingly. The taxon Nothocriconema, previously a synonym of Criconema is reinstated as subgenus Criconema (Nothocriconema) and the subgenus Ogma (Pateracephalanema) as genus Pateracephalanema. Crossonema is synonymised with Ogma and Amphisbaenema with Blandicephalanema.

For each species a detailed description of the female is given, including morphometrics and illustrations, supplemented with SEM micrographs of morphological details. Details of males and juveniles are given, if available. A diagnosis is presented to distinguish each species from other New Zealand species. Locations and plant species associations of each species are indicated and the significance of each species as a taxonomic unit is commented upon. Lists of nematode species present at various localities and associated with individual plant species are given in appendices. Keys to all taxa covered are provided.

Purchase this publication