Milnesium validum Lisi 2017, sp. nov.
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) i...
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| Format: | Other/Unknown Material |
| Language: | unknown |
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2017
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| Online Access: | https://zenodo.org/record/5620450 https://doi.org/10.5281/zenodo.5620450 |
| Summary: | 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; ... |
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