Recently, a new entomopathogenic nematode species Heterorhabditis gerrardi has been reported from Australia. This nematode and its associated bacteria, Photorhabdus asymbiotica Kingscliff strain was identified using both morphological and molecular techniques. Please read following paper on procedures used for identification of this new entomopathogenic nematode species.
Plichta, K.L., Joyce, S.A., Clarke, D., Waterfield, N. and Stock, S.P. 2009. Heterorhabditis gerrardi n. sp (Nematoda: Heterorhabditidae): the hidden host of Photorhabdus asymbiotica (Enterobacteriaceae: gamma-Proteobacteria). Journal of Helminthology.83: 309-320.