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FIGURE 1. Cheironchus haurakiensis n in Molecular characterisation of five nematode species (Chromadorida, Selachinematidae) from shelf and upper slope sediments off New Zealand, with description of three new species

FIGURE 1. Cheironchus haurakiensis n. sp. A: Male anterior body region; B: male head; C: lateroventral mandible; D: spicule and gubernaculum; E: female reproductive system. Scale bar: A = 50 mm, B = 28 mm, C = 20 mm, D = 23 mm, E = 100 mm.

FIGURE 4. Halichoanolaimus anisospermus n in Molecular characterisation of five nematode species (Chromadorida, Selachinematidae) from shelf and upper slope sediments off New Zealand, with description of three new species

FIGURE 4. Halichoanolaimus anisospermus n. sp. A: Female anterior body region; B: female posterior body region; C: entire male; D: entire female. Scale bar: A = 40 mm, B = 30 mm, C = 110 mm, D = 135 mm.

FIGURE 3. Halichoanolaimus anisospermus n in Molecular characterisation of five nematode species (Chromadorida, Selachinematidae) from shelf and upper slope sediments off New Zealand, with description of three new species

FIGURE 3. Halichoanolaimus anisospermus n. sp. A: Male anterior body region; B: male head; C: cloacal region; D: male posterior body region. Arrows show the location of the precloacal supplements. Scale bar: A & D = 40 mm, B & C = 25 mm.

FIGURE 7 in Molecular characterisation of five nematode species (Chromadorida, Selachinematidae) from shelf and upper slope sediments off New Zealand, with description of three new species

FIGURE 7. Bayesian tree inferred from SSU sequences under the general time reversible (GTR) + proportion of invariable sites (I) + gamma distribution (G) model. Posterior probabilities greater than or equal to 50% are given on appropriate clades. New sequences provided in the present study are shown in bold. The scale (bottom left) stands for substitutions per site.

FIGURE 7 in First record of spiral fovea amphidialis in Acantholaimus (Chromadoridae: Nematoda), with a description of a new species from shallow sediments of the South Atlantic and an emended diagnosis of the genus

FIGURE 7. Acantholaimus marliae sp. n.: (A) paratype juvenile, anterior region; (B) anterior region (cuticle; arrow indicating position of fovea amphidialis); (C) anterior region (buccal cavity); (D) filiform portion of tail.

FIGURE 6 in First record of spiral fovea amphidialis in Acantholaimus (Chromadoridae: Nematoda), with a description of a new species from shallow sediments of the South Atlantic and an emended diagnosis of the genus

FIGURE 6. Acantholaimus marliae sp. n.: (A) paratype juvenile, overview; (B) anterior region (pharyngeal region); (C) anterior region (cuticle, cephalic arrangement, fovea amphidialis and buccal cavity); (D) anterior region; (E) terminal portion of tail.

FIGURE 1 in First record of spiral fovea amphidialis in Acantholaimus (Chromadoridae: Nematoda), with a description of a new species from shallow sediments of the South Atlantic and an emended diagnosis of the genus

FIGURE 1. Study area showing northeastern Brazil and the Potiguar Basin. From Larrazábal-Filho et al. 2015.

FIGURE 5 in First record of spiral fovea amphidialis in Acantholaimus (Chromadoridae: Nematoda), with a description of a new species from shallow sediments of the South Atlantic and an emended diagnosis of the genus

FIGURE 5. Acantholaimus marliae sp. n.: (A) allotype female, anterior region; (B) anterior region (arrow indicating position of fovea amphidialis); (C) anterior region (buccal cavity); (D) vulva region; (E) anterior branch; (F) posterior branch; (G) paratype 1 female, anterior branch (arrow indicating large spermatozoa); (F) paratype 1 female, posterior branch (arrow indicating large spermatozoa).

FIGURE 4 in First record of spiral fovea amphidialis in Acantholaimus (Chromadoridae: Nematoda), with a description of a new species from shallow sediments of the South Atlantic and an emended diagnosis of the genus

FIGURE 4. Acantholaimus marliae sp. n.: (A) allotype female, overview; (B) anterior region (buccal cavity, cuticle, cuticular pores, cephalic arrangement and fovea amphidialis); (C) anterior region (pharyngeal region and nerve ring); (D) paratype 1 female (ovaries and large spermatozoa); (E) Spermatozoa (found in paratype1).

FIGURE 2 in First record of spiral fovea amphidialis in Acantholaimus (Chromadoridae: Nematoda), with a description of a new species from shallow sediments of the South Atlantic and an emended diagnosis of the genus

FIGURE 2. Acantholaimus marliae sp. n.: (A) holotype male, overview; (B) anterior region (cuticular pores, cephalic arrangement and fovea amphidialis); (C) anterior region (buccal cavity); (D) anterior region (pharyngeal region and nerve ring); (E) spicules and gubernaculum.

FIGURE 2. Bendiella vivipara n in Two new ovoviviparous species of the family Selachinematidae and Sphaerolaimidae (Nematoda, Chromadorida & Monhysterida) from the northern South China Sea

FIGURE 2. Bendiella vivipara n. sp. Light miCrographs. A: Anterior body region of an ovoviviparous female. B: CutiCle of male, showing amphid. C: BuCCal Cavity of a female showing paired rhabdions in buCCal Cavity. D: BuCCal Cavity of a female, showing dentiCles in buCCal Cavity. E: Posterior body region of pharynx, Cardia, and anterior body region of intestine of male. F: Vulva region. Arrow shows position of vulva.

FIGURE 1. Bendiella vivipara n in Two new ovoviviparous species of the family Selachinematidae and Sphaerolaimidae (Nematoda, Chromadorida & Monhysterida) from the northern South China Sea

FIGURE 1. Bendiella vivipara n. sp. A: Viviparous female. Total body. B: Anterior body region of male. C: Anterior body region of female. D: Posterior body region of female. E: Posterior body region of male. F: CloaCal region with spiCule, gubernaCulum, and three papillose preCloaCal supplements.

FIGURE 5. Parasphaerolaimus jintiani n in Two new ovoviviparous species of the family Selachinematidae and Sphaerolaimidae (Nematoda, Chromadorida & Monhysterida) from the northern South China Sea

FIGURE 5. Parasphaerolaimus jintiani n. sp. Light miCrographs. A: Anterior body region of viviparous female. B: Male head. C: Amphid of male. D: Lateral longitudinal unstriated band (arrow) on CutiCle. E: SpiCular apparatus. F: Female posterior end, showing vulva region (arrow).

FIGURE 4. Parasphaerolaimus jintiani n in Two new ovoviviparous species of the family Selachinematidae and Sphaerolaimidae (Nematoda, Chromadorida & Monhysterida) from the northern South China Sea

FIGURE 4. Parasphaerolaimus jintiani n. sp. A: Entire male, showing lateral longitudinal unstriated band on CutiCle. B: Entire female. C: Anterior body region of female. D: Male head. E: Female head. F: Female posterior body region. G: Male posterior body region.

FIGURE 3 in One new species and one new record of the species of the family Comesomatidae (Nematoda: Chromadorida) from the South China Sea

FIGURE 3. Paracomesoma zhangi Huang & Huang, 2018. (A) lateral view of female head end, showing buccal cavity, cephalic setae and amphid; (B) lateral view of male anterior end, showing pharynx and secretory-excretory system (C) lateral view of male posterior end, showing spicule, gubernaculum, precloacal supplements and tail; (D) entire view of female, showing vulva, ovary and eggs.

FIGURE 2 in One new species and one new record of the species of the family Comesomatidae (Nematoda: Chromadorida) from the South China Sea

FIGURE 2. Cervonema longispicula sp. nov. (A) lateral view of female anterior end, showing buccal cavity and amphideal fovea; (B) lateral view of male anterior end, showing head sensilla and amphideal fovea; (C) lateral view of male posterior end; (D) lateral view of male cloacal region, showing spicules and gubernaculum. (Scales: A, B 10 µm; C, 30 µm; D 20 µm).

FIGURE 1 in One new species and one new record of the species of the family Comesomatidae (Nematoda: Chromadorida) from the South China Sea

FIGURE 1. Cervonema longispicula sp. nov. (A) lateral view of male anterior end, showing buccal cavity, cephalic setae and amphideal fovea; (B) entire view of male, showing two testes; (C) lateral view of male anterior end, showing pharynx and excretory system; (D) lateral view of male posterior end, showing spicule, gubernaculum and caudal glands; (E) lateral view of male cloacal region, showing spicule, gubernaculum and precloacal setae; (F) entire view of female, showing vulva, spermatheca, eggs and ovaries.

FIGURE 4 in One new species and one new record of the species of the family Comesomatidae (Nematoda: Chromadorida) from the South China Sea

FIGURE 4. Paracomesoma zhangi Huang & Huang, 2018. (A) lateral view of female anterior end; (B) lateral view of male anterior end; (C) lateral view of male cloacal region, showing spicule; (D) lateral view of male cloacal region, showing spicule, gubernaculum and precloacal supplements. (Scales: A, B 10 µm; C, D 20 µm)

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FIGURE 6 in The state of the art of Chromadoridae (Nematoda, Chromadorida): a historical review, diagnoses and comments about valid and dubious genera and a list of valid species

FIGURE 6. Bayesian tree inferred by 18S sequences. The species are coloured based on current classification: *Species currently classified in a subfamily different from that which was grouped by Bayesian analysis. The posterior probabilities are given on each node. The scale represents substitutions per site.