Macrobiotus ariekammensis ARIEKAMMENSIS WEGLARSKA 1965

• Main Authors: Stec, Daniel, Vončina, Katarzyna, Kristensen, Reinhardt Møbjerg, Michalczyk, Łukasz
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2022
• Subjects: Biodiversity; Taxonomy; Animalia; Tardigrada; Eutardigrada; Parachela; Macrobiotidae; Macrobiotus; Macrobiotus ariekammensis; Norway; Svalbard; Spitsbergen
• Online Access: https://doi.org/10.5281/zenodo.6994544; http://treatment.plazi.org/id/03A1D418FF9A5A05FCD0F9B9FAFBFE27

MACROBIOTUS ARIEKAMMENSIS ARIEKAMMENSIS WĘGLARSKA, 1965 (TABLES 2, 3; FIGS 1–4) Material examined: Seven animals and four eggs. Specimens mounted on microscope slides in Hoyer’s medium (four animals + four eggs), processed for DNA sequencing (three animals). Population locality: 78°40’33’’N, 16°38’49’’E; 208 m a.s.l.: Norway, Svalbard, Fortet; moss on soil. Specimen depositories: Four animals (slides: NO.393.393.2-4) and four eggs (slide: NO.393.01) are deposited at the Institute of Zoology and Biomedical Research, Jagiellonian University, Gronostajowa 9, 30-387, Kraków, Poland. Description of the Norwegian population from Spitsbergen Animals (measurements and statistics in Table 2): Body transparent in smaller individuals (juveniles) and whitish in adults, after fixation in Hoyer’s medium transparent (Fig. 1A). Eyes present in all specimens, visible after mounting in Hoyer’s medium. Cuticular pores (0.7–1.2 µm in diameter) present, clearly visible under PCM (Fig. 1B–E) and scattered randomly on the entire body cuticle, including the external and internal surface of all legs. Patches of fine granulation present on internal and external surfaces of all legs I–III, as well as on legs IV and visible clearly in PCM (Fig. 1C–E). A pulvinus present on the internal surfaces of legs I–III (Fig. 1D). Granulation on legs IV is visible as a single large granulation patch on dorsal and lateral leg surfaces (Fig. 1E). Claws slender, with flat and wide common tract, beginning with a visible stalk that connects the claws to the wide lunulae and ending with elongated branches (especially the primary branch; Fig. 2A, B). Primary branches with distinct accessory points, visible in PCM (Fig. 2A, B). Lunulae I–III smooth (Fig. 2A), whereas lunulae IV with clear dentation (Fig. 2B, D). A single continuous cuticular bar and double muscle attachments visible on each leg I–III (Fig. 2C). Mouth anteroventral with ten peribuccal lamellae. Bucco-pharyngeal apparatus of the Macrobiotus - type (Fig. 3A). Under PCM, oral cavity armature ...