Milnesium validum Lisi 2017, sp. nov.

• Main Author: Lisi, Oscar
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2017
• Subjects: Biodiversity; Taxonomy; Animalia; Tardigrada; Eutardigrada; Apochela; Milnesiidae; Milnesium; Milnesium validum; Acutuncus antarcticus; Antarc*; Antarctica; antarcticus
• Online Access: https://doi.org/10.5281/zenodo.5620450; http://treatment.plazi.org/id/7E4D8B77FFE93125609FFDAFFE27FED2

Milnesium validum sp. nov. Fig. 6, Table 2 Type locality. Antarctica: Shore of Carezza Lake, 71° 43’ S 164° 03’E. Material examined. (collected by Prof. Salvatore Motta between 1990.12.15 and 1991.1.12): shore of Carezza Lake: the holotype (slide No. 4035) and two paratypes (slides nos. 4036–4037) in a moss sample; Lamplugh Island (75° 34’S 162° 55’E): two paratypes (slides Nos. 4038 and 4047) in a moss sample, together with Acutuncus antarcticus Edmonson Point (74° 21'S, 165° 10'E): two exuviae (slide No. 4039 with 2 eggs, and 5777 with 9 eggs) in a moss sample, together with Acutuncus antarcticus . Type repository. Holotype and paratypes are preserved in the collection of Binda & Pilato in the Department of Biological, Geological and Environmental Sciences (Section of Animal Biology “ Marcello La Greca ” of the University of Catania, Italy). Specific diagnosis. Body colourless; cuticle smooth; eye spots present; six peribuccal and two lateral papillae present; mouth terminal with six triangular peribuccal lamellae with basal stripes; cylindrical buccal tube not very wide; stylet supports inserted on the buccal tube at 61.1–64.8% of its length; claws of the Milnesium type with a [3- 3]-[3-3] configuration; primary branches with thin accessory points; secondary claws stout, with distal portion clearly wider than the basal portion; each with a rounded basal thickening (lunule); a long cuticular bar present under claws I–III. Description of the holotype. Body 482 µm long; colourless; cuticle smooth without pseudopores, reticulum, tubercles or gibbosities; eyes present; six cephalic and two lateral papillae present; bucco-pharyngeal apparatus of Milnesium type (Fig. 6 A) (buccal tube rigid without ventral lamina; apophyses for the insertion of the stylet muscles in the shape of very short and flat ridges symmetrical with respect to the frontal plane and without caudal processes; pharyngeal bulb without apophyses, placoids or septulum). Mouth terminal with six triangular peribuccal lamellae with basal stripes; ...