Figure 1:

Figure 2:

Figure 3:

Figure 4:

Figure 5:

GenBank accession numbers for the sequences used for the phylogenetic analysis_
| Species | SSU | LSU |
|---|---|---|
| Parapristionchus giblindavisi | JX163981 | JX163972 |
| Pristionchus aerivorus | FJ040440 | KT188862 |
| Pristionchus americanus | FJ040445 | KT188867 |
| Pristionchus arcanus | KT188848 | KT188878 |
| Pristionchus atlanticus | KT188839 | KT188869 |
| Pristionchus boliviae | KT188838 | KT188868 |
| Pristionchus borbonicus | KT188856 | KT188885 |
| Pristionchus brevicauda | KT188841 | KT188871 |
| Pristionchus bucculentus | KT188860 | KT188889 |
| Pristionchus bulgaricus | KT188845 | KT188875 |
| Pristionchus clavus | KT188842 | KT188872 |
| Pristionchus degawai | MH114984 | – |
| Pristionchus elegans | KJ877238 | KJ877274 |
| Pristionchus entomophagus | FJ040441 | KT188873 |
| Pristionchus exspectatus | KT188849 | KT188879 |
| Pristionchus fissidentatus | KT188855 | KJ877273 |
| Pristionchus fukushimae | KT188852 | KT188882 |
| Pristionchus hongkongensis | MH114985 | – |
| Pristionchus hoplostomus | KT188853 | KT188883 |
| Pristionchus japonicus | KT188850 | KT188880 |
| Pristionchus laevicollis | MH114986 | – |
| Pristionchus lheritieri SB245 | KT188846 | KT188876 |
| Pristionchus lucani | KT188844 | KT188874 |
| Pristionchus marianneae | FJ040442 | KT188866 |
| Pristionchus maupasi | FJ040443 | KT188863 |
| Pristionchus maxplancki | KT188851 | KT188881 |
| Pristionchus mayeri | KT188835 | KT188865 |
| Pristionchus neolucani | MH114987 | – |
| Pristionchus occultus | KX113518 | – |
| Pristionchus pacificus PS312 | AF083010 | EU195982 |
| Pristionchus pauli | FJ040446 | KT188870 |
| Pristionchus paulseni | MH114982 | – |
| Pristionchus pseudaerivus | FJ040447 | KT188864 |
| Pristionchus quartusdecimus | KT188847 | KT188877 |
| Pristionchus racemosae | KT188859 | KT188888 |
| Pristionchus riukiariae | MH114988 | – |
| Pristionchus sycomori | KT188857 | KT188886 |
| Pristionchus triformis | KT188854 | KT188884 |
| Pristionchus uniformis | KJ877236 | KJ877272 |
| Pristionchus yamagatae | MH114983 | – |
| Pristionchus sp. 2 CW-2016 | KX113519 | – |
| Pristionchus sp. 3 CW-2016 | KX113517 | – |
| Pristionchus sp. 35 VS-2015 | KT188858 | KT188887 |
| Pristionchus sp. 38 VS-2015 | KT188861 | KT188890 |
| Pristionchus trametes n. sp. | LC633357 | |
Morphometric values for Pristioinchus trametes n_ sp_
| Male | Female | ||
|---|---|---|---|
| Holotype | Paratypes | Paratypes | |
| N | – | 9 | 10 |
| L | 712 | 696 ± 58 (615–785) | 819 ± 41 (746–893) |
| a | 24.1 | 23.9 ± 1.7 (20.9–26.1) | 19.9 ± 0.7 (18.4–20.9) |
| b | 6.3 | 6.5 ± 0.5 (5.9–7.6) | 7.2 ± 0.4 (6.7–7.6) |
| c | 12.4 | 11.9 ± 0.6 (11.1–13.3) | 12.3 ± 1.2 (10.2–13.9) |
| c′ | 2.4 | 2.4 ± 0.1 (2.2–2.6) | 3.6 ± 0.5 (2.8–4.4) |
| T or V | 78.0 | 84.5 ± 3.3 (77.6–88.9) | 51.6 ± 0.8 (50.4–52.8) |
| Anterior pharynx | 59 | 55 ± 2.8 (49–59) | 57 ± 3.0 (54–64) |
| Posterior pharynx | 49 | 48 ± 2.2 (43–52) | 51 ± 3.1 (45–55) |
| Anterior/posterior pharynx ratio | 1.1 | 1.1 ± 0.1 (1.0–1.2) | 1.1 ± 0.1 (1.0–1.2) |
| Nerve ring from anterior end | 79 | 75 ± 3.9 (68–81) | 77 ± 4.0 (72–85) |
| Secretory-excretory pore from anterior end | 102 | 99 ± 5.0 (93–110) | 104 ± 5.0 (96–112) |
| Deirid from anterior end | 117 | 116 ± 4.9 (110–126) | 127 ± 5.0 (117–134) |
| Median bulb diam. | 17.6 | 16.9 ± 0.7 (15.8–18.0) | 19.0 ± 0.7 (18.0–19.8) |
| Basal bulb diam. | 14.3 | 12.9 ± 1.0 (11.0–14.4) | 14.3 ± 0.7 (13.3–15.1) |
| Maximum body diam. | 30 | 29 ± 3.2 (25–36) | 41 ± 2.4 (37–43) |
| Cloacal or anal body diam. | 24 | 24 ± 1.6 (22–27) | 19 ± 1.1 (14–22) |
| Tail length | 58 | 59 ± 3.9 (52–65) | 67 ± 7.1 (60–79) |
| Gonad length | 553 | 588 ± 50 (519–668) | – |
| Vas deferens length | 102 | 110 ± 14 (95–136) | – |
| Ratio of vas deferens to total gonad (%) | 18 | 19 ± 1.3 (17–21) | |
| Spicule (arc) | 40 | 39 ± 2.1 (36–42) | – |
| Spicule (chord) | 33 | 31 ± 1.7 (29–33) | – |
| Gubernaculum (chord) | 16.8 | 17.6 ± 1.4 (15.8–19.9) | – |
| Tail spike length | 13.8 | 12.9 ± 2.1 (9.2–16.8) | – |
| Ratio (%) of tail spike to total tail | 24 | 22 ± 2.9 (16–26) | – |
| Anterior ovary | – | – | 255 ± 17 (229–278) |
| Posterior ovary | – | – | 286 ± 54 (214–363) |
| Vulval body diam. | – | – | 41 ± 2.1 (37–43) |
| Anus-phasmid | – | – | 38 ± 4.1 (34–48) |
| Relative position of phasmid to total tail (%) | – | – | 57 ± 5.6 (48–66) |