Zalonema kamchatkaensis Fadeeva, Mordukhovich & Zograf, 2016, sp. nov.

• Main Authors: Fadeeva, Natalia, Mordukhovich, Vladimir, Zograf, Julia
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2016
• Subjects: Biodiversity; Taxonomy; Animalia; Nematoda; Chromadorea; Desmodorida; Desmodoridae; Zalonema; Zalonema kamchatkaensis; Kamchatka; Kamchatka Peninsula
• Online Access: https://doi.org/10.5281/zenodo.5677400; http://treatment.plazi.org/id/020AF37CFFC3FFF0FF7A06A380F010A2

Zalonema kamchatkaensis sp. nov. (Figs 5–7) Type material. Holotype: adult male, mounted on slide MN st 2–5sd 2–20 fr500 (2) and paratypes: three males and three females (Table 2), formalin-fixed, deposited in the nematode collection of the Division of Biological Sciences, Zoological Museum of Far Eastern Federal University, Vladivostok, Russia. Locality. Table 1. Etymology. The specific epithet refers to the locality of collection, the Kamchatka Peninsula. Measurements. See Table 2. Description. Yellowish to brownish nematodes with cylindrical body, rounded high cephalic capsule and conical tail; body cuticle with distinct fine striations, not marked by longitudinal structures or lateral differentiation. Annuli narrower at mid-body, may be fused or split. Body may bear numerous suctorian ciliates. Eight longitudinal rows of short somatic setae (~ 7–9 µm long), reduced to six rows at mid-body length and to four rows in the posterior region. The length of postcaudal setae increases up to 4–5 µm. Anterior retractable lip region, cuticle around the mouth opening wrinkled in irregular folds. Six inner (only seen with SEM) and six outer labial setiform papillae (1 µm long). Four cephalic setae (4 µm long) and eight cervical setae (3–4 µm long) located at posterior region of cephalic capsule, with a few minute pores with thin canals. Cephalic capsule smooth, convex, gradually thickening posteriorly to become thicker than body cuticle (2– 4 µm). Cephalic capsule relatively high and somewhat conoid. Amphideal fovea large (bigger in males than in females), spirally coiled with 2.1–2.2 turns, situated laterally in middle of the cephalic capsule. Buccal cavity with one dorsal tooth (5–6 µm long) and two small ventro-sublateral teeth and one circle of denticles. Pharynx slender, evenly muscular throughout its length, with pyriform terminal bulb, gradually widening towards the base. Cardia large. No ventral gland found. Nerve ring located posterior to mid-pharynx length. Tail conical, showing sexual dimorphism; i.e., ...