Where can I get a reliable list of Wieser's (1953) nematode feeding type classification?

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Paul Somerfield

or this, for a slightly more up-to-date classification:

DOI: https://doi.org/10.1017/S0025315400033889

Matthew Richard Lee

As far as I'm aware there is no actual list. The classifications are based on buccal morphology, so you need to go through each species in your samples and assign then to one of Wieser's feeding groups, or alternatively to one the groups outlined by Moens and Vincx (the link Paul gave) which is an extension of the Wieser classification.