Identification of soil nematodes with pictures? Is there a specific proposal?

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Notice how Mulvey and Anderson use annotated pictures to identify soil nematodes in their book:

http://esc-sec.ca/wp/wp-content/uploads/2017/03/AAFC_plant_parasitic_nematodes_in_canada_part_1_key.pdf

I post a few nematode pictures to flicker here:

https://www.flickr.com/photos/182307607@N07/albums