Morphological and molecular characterisation of some Criconematidae (Nematoda, Tylenchida): Ogma decalineatus (Chitwood, 1957) Andrassy, 1979, Criconema silvum (van den Berg, 1984) Raski & Luc, 1985 and Neobakernema variable (Raski & Golden, 1966) from South Africa and the USA

Abstract

During recent nematological surveys Ogma decalineatus and Criconema silvum were found in South Africa and Neobakernema variabile was found in California, USA. These three species are morphologically and morphometrically described. The SEM photos are also given for the species. Molecular characterisations of these three species using the D2-D3 expansions segments of 28S rRNA, ITS rRNA and COI mtDNA gene sequences are provided