Tripylella fatimaensis, Prado-Vera, Ignacio Cid Del, Ferris, Howard & Nadler, Steven A., 2016

Prado-Vera, Ignacio Cid Del, Ferris, Howard & Nadler, Steven A., 2016, Five new species of the genus Tripylella (Nematoda: Enoplida: Tripylidae), Zootaxa 4109 (2), pp. 198-217 : 208-209

Tripylella fatimaensis sp. n.

( Fig. 4 E–I, Fig. 6 A–D, Fig. 7 A–D)

Measurements: See Tables 1 and 2.

Female n=12: Body C-shaped upon relaxation and fixation. Cuticle thin, 1–2 Μm, with fine striations. Pores and setae present posterior to the cervical region, scattered along the body. Head region rounded, 14–16 Μm wide; inner labial papillae conical, very small; outer labial setae conical, 2–3 Μm long; cephalic setae small, 1 Μm long, and separated from the anterior cephalic setae by <1Μm so that they appear as a single whorl of six longer and four shorter setae. The dorsal tooth is 13–16 (15±0.31) Μm from the anterior end and 2–4 (3±0.1) Μm posterior to the two subventral teeth. The dorsal tooth and subventral teeth are in the same stomal chamber. Amphids caliciform, 7–12 Μm from anterior end of the body. Pharynx-vulva distance 132–255 (190±9.4) Μm. Cardia very conspicuous, discoid, 16–26 (19±0.8) Μm long and 15–27 (22±1.1) Μm wide, comprised of six cells, the anterior and posterior of medium size and the median cells larger. Excretory pore at 58–89 Μm from the anterior end.

Female gonads reflexed, the anterior 40–115 (76±7.4) Μm long and 6–22.9 (11±1.39)% of the body length and the posterior 39–86 (66±5.3) Μm long and 6.5–11.4 (8.7±0.6) % of the body length. Vulva 189–292 (254±8.9) Μm anterior to the anus, with slightly protruding lips and with very small oval cuticular structures. Rectum 17–22 (20±0.5) Μm long, 0.8–1.4 (1.2±0.1) times anal body diameter. Tail cylindroid, narrowing abruptly at 50–60 (56±0.9)% of its length, ending in a spinneret 2–4 Μm long; three pairs of postanal caudal setae present: one pair latero-ventral, one pair latero-dorsal and one pair ventral.

Male: Unknown.

Type Locality and Habitat: Moss on a tree trunk in the garden of the Santuário de Fátima, Fátima, Portugal, N39°37'52.0", W8°40'29.9", 350 m above sea level. Collector I. Cid del Prado-Vera on September 10, 2011.

Type Specimens: Holotype female ( CNHE 9059) and paratypes ( CNHE 9060) in CNHE; paratypes in CNCP and NCE.

Etymology: The specific epithet refers to the geographic location of the type species, Fátima, Portugal.

Diagnosis and Relationships: Tripylella fatimaensis sp. n. is characterized by the short body (0.59–0.81) mm, by the length of the pharynx, length of the tail (90–128 Μm), length of the narrower portion of the tail (45–58 Μm), the presence of very small oval cuticular structures in the vulva region and by the slightly protruding vulval lips.

Tripylella fatimaensis sp. n. is very close to T. quitoensis sp. n. in the length of the tail, in the proportional length of the wider region of the tail, 53–60 vs. 54–64%, in the position of the vulva and in the absence of cervical setae. It differs from in T. quitoensis sp. n, in the length of the tail (90–128 (110±2.8) µm vs. 71–112 (98±3.8) µm), in the length of the narrower portion of the tail (40–58 (49±1.1) µm vs. 35–45 (42±1.2) µm) and in the index c (6.2–7.2 (6.7±0.1) vs. 6.9–10.1 (7.5±0.3). Also, T. fatimaensis sp. n. is close to T. iucunda Andrássy, 2008 , in the width of the head, the shape of the dorsal tooth and its distance from the anterior end of the body, the position of the vulva and the shape of the tail. It differs in the length of the body 0.59–0.80 (0.73±19.9) vs. 0.68–0.75, pharynx 160–207 (180±3.7) µm vs. 150–158 µm, in the index c 6.2–7.2 (6.7±0.1) vs 6.0–6.5, in the length of tail 90–128 (110±2.8) vs. 105–120 µm and the annulated vs. smooth cuticle in T. iucunda .

Molecular Characteristics: There was no material available for molecular characterization of T. fatimaensis .

Figures

FIGURE 4. Tripylella quitoensis sp. n. Female (A. D). A. Entire body; B: Anterior end; C: Pharynx intestinal junction; D: Tail. Tripylella fatimaensis sp. n. Female (E. I) E: Anterior end; F: Anterior end; G: Pharyngo-intestinal junction; H: Posterior end; I: Tail.

FIGURE 6. Tripylella fatimaensis sp. n. Female (A. D). A: Entire body; B: Cephalic region, dorsal-lateral view; C: Face view, cephalic region; D: Somatic seta.

FIGURE 7. Tripylella fatimaensis sp. n. Female (A. D). A: Vulva and body pores. Ventral view; B: Vulva and body setae. Lateroventral view; C: Caudal setae. Lateral view; D: Tail. Lateral view.