TABLE 2 in Phylum Nematoda: feeding habits for all valid genera using a new, universal scheme encompassing the entire phylum, with descriptions of morphological characteristics of the stoma, a key, and discussion of the evidence for trophic relationships

<p><b>TABLE 2.</b> Tabular compilation of morphological characteristics of trophic groups.</p><table><tbody><tr><th></th><th></th><th></th><th></th><th>Located on or within vertebrate <b>1</b></th><th>Located on or within arthropod</th><th>Located on or within non- arthropod invertebrate 1 to 3 large nematodes only in host</th><th>Invertebrate host haemolymph cloudy Located on or within plant or plant part</th><th>Part of plant <b>2</b></th><th>Host <b>modified (other than damage)</b></th><th>Body swollen <b>3</b></th><th>Stylet present</th><th>Stylet knobs or flanges present</th><th>Stylet knobs distance across</th><th>Stylet length</th><th>Stylet anterior solid</th><th>Stylet conus &amp; shaft thickness</th><th>Stylet diameter&gt;30 % length</th><th>Stylet aperture&gt; 30 % length</th><th>Stylet lumen diameter</th><th>lips curled forward</th><th>cephalic framework present</th><th>cephalic framework cuticle thickened</th><th>oeophageal bulb posterior to nerve ring</th><th>terminal oesophageal swelling, bulb or glands present</th><th>terminal oesophageal bulb very long (&gt; 2 x body diameter)</th><th>number of oesophageal bulbs or swellings</th><th>head length</th><th>tail filiform</th><th>tail with terminal hyaline <b>portion</b></th><th>mouth absent &amp; oesophagus disconnected from intestine &amp; no anus</th><th>mouth cavity blocked or filled</th><th>mouth narrow (&lt;20% head diameter)</th><th>mouth with cheilorhabdion ridges</th><th>mouth with teeth</th><th>tooth near entrance to mouth</th><th>mouth cuticle thickened</th><th>mouth with&gt; 2 thickened plates in wall</th><th>mouth with denticles</th><th>located on vertebrate</th></tr></tbody><tbody><tr><th>microbial feeder</th><th>sucker</th><th><b>suspension</b></th><th></th><td>0</td><td>0 (1)</td><td>0 (1)</td><td>*</td><td>*</td><td>0</td><td>* (8)</td><td>0</td><td>0</td><td>0</td><td><b>*</b></td><td>* *</td><td>* *</td><td>* *</td><td>* *</td><td>* *</td><td>* *</td><td>* *</td><td>0 0</td><td>0 0</td><td>* *</td><td>0/1 0/1</td><td>0/1 0/1</td><td><b>0</b> 0</td><td>0&ndash;1 0&ndash;1</td><td>0/1 0/1</td><td>0/1 0/1</td><td>0 0</td><td>0 0</td><td>* *</td><td>1 0</td><td>0 0</td><td>0 0</td><td>* *</td><td>0 0</td><td>0 0</td><td>0 0</td><td>0 0</td></tr><tr><th><b>particulate</b></th><th></th><td>0 (1)</td><td>0 (1)</td><td>0 (1)</td><td>*</td><td>*</td><td>0</td><td>* (8)</td><td>0</td><td>0</td><td>0</td><td>*</td><td>*</td><td>*</td><td>*</td><td>*</td><td>*</td><td>*</td><td>*</td><td>0</td><td>0</td><td>*</td><td>0/1</td><td>0/1</td><td>0</td><td>0&ndash;1</td><td>0/1</td><td>0/1</td><td>0</td><td>0</td><td>*</td><td>1</td><td>0/1</td><td>0/1</td><td>0/1</td><td>0/1</td><td>0</td><td>0</td><td>0</td></tr><tr><th><b>processor</b></th><th><b>suspension</b></th><th></th><td>0</td><td>0 (1)</td><td>0 (1)</td><td>*</td><td>*</td><td>0</td><td>* (8)</td><td>0</td><td>0</td><td>0</td><td>*</td><td>*</td><td>*</td><td>*</td><td>*</td><td>*</td><td>*</td><td>*</td><td>0</td><td>0</td><td>*</td><td>0/1</td><td>0/1</td><td>0</td><td>0&ndash;1</td><td>0/1</td><td>0/1</td><td>0</td><td>0</td><td>0/1</td><td>0</td><td>0/1</td><td>0/1</td><td>0/1</td><td>0/1</td><td>0</td><td>0/1</td><td>0</td></tr><tr><th></th><th><b>particulate</b></th><th></th><td>0</td><td>0 (1)</td><td>0 (1)</td><td>*</td><td>*</td><td>0 (1)</td><td>* (8)</td><td>0</td><td>0</td><td>0</td><td>*</td><td>&lt;4</td><td>5&ndash; 80</td><td>0 (1)</td><td>1/2</td><td>0</td><td>0</td><td>1/2</td><td>0</td><td>0/1</td><td>0</td><td>0/1</td><td>0/1</td><td>0/1</td><td>1&ndash;2</td><td>0/1</td><td>0/1</td><td>0</td><td>0</td><td>0</td><td>1</td><td>0/1</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td></tr><tr><th><b>piercer</b></th><th></th><td>0</td><td>0 (1)</td><td>0 (1)</td><td>*</td><td>*</td><td>0</td><td>* (8)</td><td>0</td><td>0</td><td><b>1</b></td><td>0/1</td><td>*</td><td>*</td><td>*</td><td>*</td><td>*</td><td>*</td><td>*</td><td>0</td><td>0</td><td>*</td><td>0/1</td><td>0/1</td><td>0</td><td>1&ndash;2</td><td>0/1</td><td>0/1</td><td>0</td><td>0</td><td>0/1</td><td>0/1</td><td>0</td><td>0</td><td>0</td><td>1</td><td>1</td><td>0</td><td>0</td></tr><tr><th><b>crusher</b></th><th></th><td>0</td><td>0 (1)</td><td>0 (1)</td><td>*</td><td>*</td><td>0 (1)</td><td>* (8)</td><td>0</td><td>0</td><td>0</td><td>*</td><td>*</td><td>*</td><td>*</td><td>*</td><td>*</td><td>*</td><td>*</td><td>0</td><td>0</td><td>*</td><td>0/1</td><td>0/1</td><td>0</td><td>0&ndash;1</td><td>0/1</td><td>0/1</td><td>0</td><td>0</td><td>0</td><td>0/1</td><td>1</td><td>1</td><td>1</td><td>1</td><td>0</td><td>0</td><td>0</td></tr><tr><th><b>scraper</b></th><th></th><td>0</td><td>0</td><td>0</td><td>*</td><td>*</td><td>0</td><td>*</td><td>0</td><td>0</td><td>0</td><td>*</td><td>*</td><td>*</td><td>*</td><td>*</td><td>*</td><td>*</td><td>*</td><td>0</td><td>0</td><td>*</td><td>0/1</td><td>0/1</td><td>0</td><td>0&ndash;2</td><td>0/1</td><td>0/1</td><td>0</td><td>0</td><td>0</td><td>0/1</td><td>0/1</td><td>0/1</td><td>0/1</td><td>1</td><td>0</td><td>0/1</td><td>0</td></tr><tr><th>predator</th><th><b>chewer</b></th><th></th><td>0</td><td>0</td><td>0</td><td>*</td><td>*</td><td>0 (1)</td><td>* (8)</td><td>0</td><td>0</td><td>0</td><td>*</td><td>&lt;5</td><td>20&ndash;50</td><td>0</td><td><b>2</b></td><td>(0) <b>1</b></td><td>(0)1</td><td><b>2</b></td><td>0 (1)</td><td>0/1</td><td>0/1</td><td>0/1</td><td>0/1</td><td><b>(0) <b>1</b></b></td><td>1</td><td>0/1/ <b>2</b></td><td>0/1</td><td>0/1</td><td>0</td><td>0</td><td>1</td><td>0/1</td><td>0</td><td>0</td><td>0/1</td><td>0</td><td>0</td><td>0</td></tr><tr><th><b>piercer</b></th><th></th><td>0</td><td>0</td><td>0</td><td>*</td><td>*</td><td>0 (1)</td><td>* (8)</td><td>0</td><td>0</td><td><b>1</b></td><td>0 (1)</td><td>&lt;2</td><td>&lt;10</td><td>0</td><td>1</td><td>0</td><td>0</td><td>1</td><td>0</td><td>1</td><td>0</td><td>0/1</td><td>0/1</td><td><b>1</b></td><td>1&ndash;2</td><td>0/1</td><td>0</td><td>0</td><td>0</td><td>0</td><td>1</td><td>0</td><td>0</td><td>*</td><td>0</td><td>0</td><td>0</td><td>0</td></tr><tr><th>parasite</th><th><b>plant</b></th><th>internal modifier</th><th>aerial</th><td>0</td><td>0</td><td>0</td><td>*</td><td>*</td><td>1</td><td>1/2/3</td><td>1</td><td>(0) 1</td><td>1</td><td><b>1</b></td><td>3&ndash;5</td><td>10&ndash;20</td><td>0</td><td>1</td><td>0</td><td>0</td><td>1</td><td>0</td><td>1</td><td>1</td><td>1</td><td>1</td><td><b>1</b></td><td>2</td><td>0/1</td><td>0</td><td>0/1</td><td>0</td><td>0</td><td>1</td><td>0</td><td>0</td><td>*</td><td>0</td><td>0</td><td>0</td><td>0</td></tr><tr><th>below- ground</th><td>0</td><td>0</td><td>0</td><td>*</td><td>*</td><td>1</td><td>9 (10) (11)</td><td><b>1</b></td><td>(0) <b>2</b></td><td>(0)1</td><td><b>1</b></td><td>&lt;3</td><td>5&ndash;15</td><td>0</td><td>1</td><td>0</td><td>0</td><td>1</td><td>0</td><td>1</td><td>0</td><td>0/1</td><td>0/1</td><td>0/1</td><td>1&ndash;2</td><td>0/1</td><td>0</td><td>0</td><td>0</td><td>0</td><td>1</td><td>0</td><td>0</td><td>*</td><td>0</td><td>0</td><td>0</td><td>0</td></tr><tr><th>internal migrator</th><th>aerial below- ground</th><td>0 0</td><td>0 (1) 0</td><td>0 (1) 0</td><td>* *</td><td>* *</td><td><b>1</b> 1</td><td>3/5/7 9 (10) (11)</td><td>0 <b>0</b></td><td>0 0</td><td>1 (0)1</td><td><b><b>1</b> <b>1</b></b></td><td>(2&ndash;5) 5&ndash;6</td><td>10&ndash;25</td><td>0</td><td><b>2</b></td><td>0</td><td>0</td><td>1</td><td>0</td><td>1</td><td>1</td><td>1</td><td>1</td><td><b>1</b></td><td>2</td><td><b>1/2</b></td><td>0</td><td>0</td><td>0</td><td>0</td><td>1</td><td>0</td><td>0</td><td>*</td><td>0</td><td>0</td><td>0</td><td>0</td></tr><tr><th>external root feeder</th><th>subsurface</th><td>0</td><td>0</td><td>0</td><td>*</td><td>*</td><td><b>1</b></td><td>(9) 10/11</td><td>0</td><td>0/1 (2)</td><td>(0)1</td><td><b>1</b></td><td>5&ndash;8</td><td>20&ndash;200</td><td>0</td><td><b>2</b></td><td>0</td><td>0</td><td>1</td><td>0</td><td>1</td><td>1</td><td>1</td><td>1</td><td><b>1</b></td><td>2</td><td>0/1/ <b>2</b></td><td>0/1</td><td>0/1</td><td>0</td><td>0</td><td>1</td><td>0</td><td>0</td><td>*</td><td>0</td><td>0</td><td>0</td><td>0</td></tr><tr><th><b>surface</b></th><td>0</td><td>0</td><td>0</td><td>*</td><td>*</td><td><b>1</b></td><td>9</td><td>0</td><td>0</td><td>(0)1</td><td><b>1</b></td><td>3&ndash;5</td><td>10&ndash;20 (40&ndash;200)</td><td>0</td><td>1/2</td><td>0</td><td>0</td><td>1</td><td>0</td><td>1</td><td>0/1</td><td>0/1</td><td>1</td><td>(0) <b>1</b></td><td>0&ndash;2</td><td>0/1/ <b>2</b></td><td>0/1</td><td>0/1</td><td>0</td><td>0</td><td>1</td><td>0</td><td>0</td><td>*</td><td>0</td><td>0</td><td>0</td><td>0</td></tr><tr><th>external browser</th><th></th><td>0</td><td>0 (1)</td><td>0 (1)</td><td>*</td><td>*</td><td><b>1</b></td><td>10</td><td>0</td><td>0</td><td><b>1</b></td><td><b>(0) <b>1</b></b></td><td>&lt;4</td><td>&lt;15</td><td><b>0</b> (1)</td><td>1</td><td>0</td><td>0</td><td>1</td><td>0</td><td>0/1</td><td>0/1</td><td>0/1</td><td>0/1</td><td>(0) <b>1</b></td><td>0&ndash;2</td><td>0/1</td><td>0/1</td><td>0</td><td>0</td><td>0</td><td>1</td><td>0</td><td>0</td><td>*</td><td>0</td><td>0</td><td>0</td><td>0</td></tr><tr><th>wood &amp; bark associate</th><th></th><td>0</td><td>0 (1)</td><td>0 (1)</td><td>*</td><td>*</td><td>1</td><td><b>6/8</b></td><td>0</td><td>0</td><td>0/1</td><td><b>0/1</b></td><td>* (&lt;4)</td><td>&lt;15</td><td>1</td><td>1</td><td>0</td><td>0</td><td>1</td><td>0</td><td>0/1</td><td>0/1</td><td>0/1</td><td>0/1</td><td>0/1</td><td>0&ndash;2</td><td>0/1</td><td>0/1</td><td>0</td><td>0</td><td>0/1</td><td>0/1</td><td>0/1</td><td>0/1</td><td>0/1</td><td>0/1</td><td>0</td><td>0</td><td>0</td></tr><tr><th>invertebrate</th><th><b>arthropod</b></th><th></th><td>0</td><td><b>1</b></td><td>0 (1)</td><td>0/1</td><td>0/1</td><td>0 (1)</td><td>4</td><td>0/1</td><td>0/1/2</td><td>0/1</td><td>(0)1</td><td>&lt;4</td><td>*(15&ndash;25)</td><td>0</td><td>1</td><td>0</td><td>0</td><td>1</td><td>0</td><td>0/1</td><td>0</td><td>0</td><td>0/1</td><td>0</td><td>1</td><td>0/1/ <b>2</b></td><td>0</td><td>0</td><td>0/ <b>1</b></td><td>0/1</td><td>0/1</td><td>0</td><td>0/1</td><td>0/1</td><td>0/1</td><td>0</td><td>0</td><td>1</td></tr><tr><th><b>other</b></th><th></th><td>0</td><td>0 (1)</td><td><b>1</b></td><td>0/1</td><td>0/1</td><td></td><td>4</td><td>0/1</td><td>0/1/2</td><td>0/1</td><td>(0)1</td><td>&lt;4</td><td>*(15&ndash;25)</td><td>0</td><td>1</td><td>0</td><td>0</td><td>1</td><td>0</td><td>0/1</td><td>0</td><td>0</td><td>0/1</td><td>0</td><td>1</td><td>0/1/ <b>2</b></td><td>0</td><td>0</td><td>0/ <b>1</b></td><td>0/1</td><td>0/1</td><td>0</td><td>0/1</td><td>0/1</td><td>0/1</td><td>0</td><td>0</td><td>1</td></tr><tr><th><b>vertebrate</b></th><th><b>fish</b></th><th></th><td><b>1</b></td><td>0 (1)</td><td>0 (1)</td><td>0</td><td>0</td><td>0</td><td>*</td><td>0/1</td><td>0/1</td><td>0</td><td>*</td><td>*</td><td>*</td><td>*</td><td>*</td><td>0</td><td>0</td><td>*</td><td>0</td><td>0</td><td>*</td><td>0/1</td><td>0/1</td><td>0</td><td>0&ndash;1</td><td>0/1/ <b>2</b></td><td>0</td><td>0</td><td>0 (1)</td><td>0/1</td><td>0/1</td><td>0</td><td>0/1</td><td>0/1</td><td>0/1</td><td>0</td><td>0</td><td>1</td></tr><tr><th><b>amphibian</b></th><th></th><td><b>1</b></td><td>0 (1)</td><td>0 (1)</td><td>0</td><td>0</td><td>0</td><td>*</td><td>0/1</td><td>0/1</td><td>0</td><td>*</td><td>*</td><td>*</td><td>*</td><td>*</td><td>0</td><td>0</td><td>*</td><td>0</td><td>0</td><td>*</td><td>0/1</td><td>0/1</td><td>0</td><td>0&ndash;1</td><td>0/1/ <b>2</b></td><td>0</td><td>0</td><td>0 (1)</td><td>0/1</td><td>0/1</td><td>0</td><td>0/1</td><td>0/1</td><td>0/1</td><td>0</td><td>0</td><td>1</td></tr><tr><th><b>reptile</b></th><th></th><td><b>1</b></td><td>0 (1)</td><td>0 (1)</td><td>0</td><td>0</td><td>0</td><td>*</td><td>0/1</td><td>0/1</td><td>0</td><td>*</td><td>*</td><td>*</td><td>*</td><td>*</td><td>0</td><td>0</td><td>*</td><td>0</td><td>0</td><td>*</td><td>0/1</td><td>0/1</td><td>0</td><td>0&ndash;1</td><td>0/1/ <b>2</b></td><td>0</td><td>0</td><td>0 (1)</td><td>0/1</td><td>0/1</td><td>0</td><td>0/1</td><td>0/1</td><td>0/1</td><td>0</td><td>0</td><td>1</td></tr><tr><th><b>bird</b></th><th></th><td><b>1</b></td><td>0 (1)</td><td>0 (1)</td><td>0</td><td>0</td><td>0</td><td>*</td><td>0/1</td><td>0/1</td><td>0</td><td>*</td><td>*</td><td>*</td><td>*</td><td>*</td><td>0</td><td>0</td><td>*</td><td>0</td><td>0</td><td>*</td><td>0/1</td><td>0/1</td><td>0</td><td>0&ndash;1</td><td>0/1/ <b>2</b></td><td>0</td><td>0</td><td>0 (1)</td><td>0/1</td><td>0/1</td><td>0</td><td>0/1</td><td>0/1</td><td>0/1</td><td>0</td><td>0</td><td>1</td></tr><tr><th><b>mammal</b></th><th></th><td><b>1</b></td><td>0 (1)</td><td>0 (1)</td><td>0</td><td>0</td><td>0</td><td>*</td><td>0/1</td><td>0/1</td><td>0 (1)</td><td>0</td><td>*</td><td></td><td></td><td>*</td><td>0</td><td>0</td><td>*</td><td>0</td><td>0</td><td>*</td><td>0/1</td><td>0/1</td><td>0</td><td>0&ndash;1</td><td>0/1/ <b>2</b></td><td>0</td><td>0</td><td>0 (1)</td><td>0/1</td><td>0 (1)</td><td>0</td><td>0/1</td><td>0/1</td><td>0/1</td><td>0</td><td>0</td><td>1</td></tr><tr><th>host unknown</th><th></th><th></th><td>0 (1)</td><td>0 (1)</td><td>0 (1)</td><td>0/1</td><td>0</td><td>0</td><td>*</td><td>*</td><td>0/1</td><td>0</td><td><b>*</b></td><td>*</td><td>*</td><td>*</td><td>*</td><td>0</td><td>0</td><td>*</td><td>0</td><td>0</td><td>*</td><td>0/1</td><td>0/1</td><td><b>0</b></td><td>0&ndash;1</td><td>0/1/ <b>2</b></td><td>0</td><td>0</td><td>0 (1)</td><td>0/1</td><td>0</td><td>0</td><td>0/1</td><td>0/1</td><td>0/1</td><td>0</td><td>0</td><td>1</td></tr></tbody></table><p>¹ throughout table 0 means feature is negative or absent, 1 means feature is positive or present. Bold values indicate distinctive features. Values in brackets indicate values that are not common or occur in only a few members of the trophic group. &ldquo;/&rdquo; indicates alternative values.</p><p>² 1=seed, 2=flower or fruit bud, 3=inside leaf, 4=leaf surface, 5=inside non-woody stem, 6=inside woody stem, 7=outside smooth stem, 8=in fibrous bark, 9=inside roots, 10=around root surface, 11=in soil or substrate</p><p>³ 0=not swollen, 1=swollen, 2=globose</p><p>⁴ 0=not offset, 1=low (head length &lt;0.4 times length), 2=high (length&gt;0.4 times length)</p><p>¹ throughout table 0 means feature is negative or absent, 1 means feature is positive or present. Bold values indicate distinctive features. Values in brackets indicate values that are not common or occur in only a few members of the trophic group. &ldquo;/&rdquo; indicates alternative values.</p><p>² 1=seed, 2=flower or fruit bud, 3=inside leaf, 4=leaf surface, 5=inside non-woody stem, 6=inside woody stem, 7=outside smooth stem, 8=in fibrous bark, 9=inside roots, 10=around root surface, 11=in soil or substrate</p><p>³ 0=not swollen, 1=swollen, 2=globose</p><p>⁴ 0=not offset, 1=low (head length &lt;0.4 times length), 2=high (length&gt;0.4 times length)</p><p>¹ throughout table 0 means feature is negative or absent, 1 means feature is positive or present. Bold values indicate distinctive features. Values in brackets indicate values that are not common or occur in only a few members of the trophic group. &ldquo;/&rdquo; indicates alternative values.</p><p>² 1=seed, 2=flower or fruit bud, 3=inside leaf, 4=leaf surface, 5=inside non-woody stem, 6=inside woody stem, 7=outside smooth stem, 8=in fibrous bark, 9=inside roots, 10=around root surface, 11=in soil or substrate</p><p>³ 0=not swollen, 1=swollen, 2=globose</p><p>⁴ 0=not offset, 1=low (head length &lt;0.4 times length), 2=high (length&gt;0.4 times length)</p>