Milnesium eurystomum Maucci 1991
Milnesium eurystomum Maucci, 1991 (Figs 1–6, Table 2) Material examined. Holotype: Female from Southern Greenland, near Narssaq and around the Narssarssuaq airfield, along the road from the airfield to the Kiagtut glacier; Sermiat, on the front of the ‘Inlandsis’, ca. 61°10'N and 45°23'W,...
| Main Authors: | , , , |
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| Format: | Other/Unknown Material |
| Language: | unknown |
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Zenodo
2012
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| Online Access: | https://doi.org/10.5281/zenodo.5612861 http://treatment.plazi.org/id/03A987E97333FFCE1AB77283FBF3E4DB |
| Summary: | Milnesium eurystomum Maucci, 1991 (Figs 1–6, Table 2) Material examined. Holotype: Female from Southern Greenland, near Narssaq and around the Narssarssuaq airfield, along the road from the airfield to the Kiagtut glacier; Sermiat, on the front of the ‘Inlandsis’, ca. 61°10'N and 45°23'W, ca. 100 m asl, moss and lichen sample from a sun-exposed rock, 1987, coll. Walter Maucci. Female from Svalbard, Spitsbergen: Northern part of the Revdalen Valley, near the Revvatnet lake and the Revelva river, 77°01'41''N and 15°22'21''E, 67 m asl, moss from rock, 26.06.2010., coll. Łukasz Kaczmarek and Jerzy Smykla. Description (measurements in Table 2). Body brownish, eyes present (but not visible after preparation). Cuticle smooth, without granulation or pores (Figs 1–2). Two lateral and six peribuccal papillae present (ventral papilla smaller than other papillae). Spitsbergen of Milnesium eurystomum and a paratype of Milnesium granulatum Ramazzotti, 1962. CHARACTER M. eurystomum M. granulatum Holotype Spitsbergen Paratype µm pt µm pt µm pt Buccal apparatus of the Milnesium type (Figs 3–4). Six peribuccal lamellae around the mouth opening present. Buccal tube wide and short (buccal tube standard width on average 63% of its length), and funnel-shaped, wider anteriorly (posterior diameter on average 69% of the anterior diameter). Pharyngeal bulb elongated, pear-shaped and without placoids or septulum. Claws of the Milnesium type, slender (Figs 5–6). Primary branches on all legs with small, but distinct accessory points detaching from the branch at its greatest curvature. Secondary branches with rounded basal thickenings. All secondary branches on all legs with three points (i.e. claw configuration: [3-3]-[3-3]). Single, long transversal, cuticular bars under claws I–III present (Fig. 5). Although eggs were not described by Maucci (1991) nor found in the Spitsbergen samples, we should probably expect them to be oval, smooth and deposited in exuvium as in all other known Milnesium species. Remarks. The specimen of M. eurystomum ... |
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