A new species of Isohypsibiid (Eutardigrada) from Sicily

GIOVANNI PILATO; VERA D’URSO; GIORGIO SABELLA; OSCAR LISI

doi:10.11646/zootaxa.4608.3.8

A new species of Isohypsibiid (Eutardigrada) from Sicily

Zootaxa ◽

10.11646/zootaxa.4608.3.8 ◽

2019 ◽

Vol 4608 (3) ◽

pp. 543

Author(s):

GIOVANNI PILATO ◽

VERA D’URSO ◽

GIORGIO SABELLA ◽

OSCAR LISI

Keyword(s):

New Species ◽

Cuticular Ornamentation ◽

A New Species

Dastych (2016) analysed the holotype of Isohypsibius tetradactyloides (Richters, 1907) and noticed that it possesses a very faint cuticular sculpture. For this and other characters, Dastych considered the species to be a synonym of Isohypsibius asper (Murray, 1906). The authors re-examined specimens attributed to Isohypsibius tetradactyloides by Pilato (1971) from two Sicilian rivers, and noticed that they cannot be attributed to Isohypsibius asper but to a new species. This new species belongs to the I. asper group, and is described here as Isohypsibius occultus sp. nov.. As the very faint cuticular ornamentation can be difficult to observe, the authors compared the new species with species having smooth cuticle or ornamented cuticle. Species with cuticular gibbosities or annulations, or clearly different in other characters, i.e. those with only two macroplacoids, the presence of a septulum, and cuticular bars on the legs, were excluded from comparison.

Download Full-text

Tardigrada from Santo Antão Island (Archipelago of Cape Verde, West Africa) with the description of a new species

Zootaxa ◽

10.11646/zootaxa.2838.1.2 ◽

2011 ◽

Vol 2838 (1) ◽

pp. 30 ◽

Cited By ~ 4

Author(s):

PAULO FONTOURA ◽

GIOVANNI PILATO ◽

OSCAR LISI

Keyword(s):

New Species ◽

West Africa ◽

Cape Verde ◽

Green Colour ◽

Dichotomous Key ◽

Cuticular Ornamentation ◽

A New Species

Three tardigrade species from Santo Antão Island, Archipelago of Cape Verde are firstly reported from Republic of Cape Verde: Echiniscus scabrospinosus Fontoura, 1982, Echiniscus clavispinosus sp. nov. and Milnesium tardigradum Doyère, 1840. E. clavispinosus sp. nov. belongs to the ‘viridis group’ of species characterized by the green colour and plate ornamentation comprised of tubercles, fine dots and light spots, by lacking dorsal and lateral trunk appendages (cirrus A excluded) and well developed claws. E. clavispinosus sp. nov. differs from all the known species of the ‘viridis group’ in having the area between the paired plate III and the terminal plate unsculptured, in details of the cuticular ornamentation, pointed clavae instead of papillate apices, and stronger spur on internal claws. A dichotomous key to the species of the Echiniscus viridis group and a list of Macaronesian species are also given.

Download Full-text

Minibiotus xavieri, a new species of tardigrade from the Parque Biologico de Gaia, Portugal (Eutardigrada: Macrobiotidae)

Zootaxa ◽

10.11646/zootaxa.2267.1.4 ◽

2009 ◽

Vol 2267 (1) ◽

pp. 55-64 ◽

Cited By ~ 3

Author(s):

PAULO FONTOURA ◽

GIOVANNI PILATO ◽

PAULO MORAIS ◽

OSCAR LISI

Keyword(s):

New Species ◽

Systematic Position ◽

Pharyngeal Bulb ◽

Quantitative Characters ◽

Variable Shape ◽

Cuticular Ornamentation ◽

Pharyngeal Apparatus ◽

A New Species

A new tardigrade, Minibiotus xavieri sp. nov., is described from lichen and moss samples collected in Parque Biologico de Gaia, Avintes, Portugal. The new species has variously shaped pores forming transverse bands around the cuticle; granulation on legs absent. Peribuccal lamellae absent, peribuccal papulae present as in all species of Minibiotus. Buccal tube narrow with an anterior bend; pharyngeal bulb with apophyses, three small macroplacoids and microplacoid. Minibiotus xavieri sp. nov. differs from the species of the genus with a similar cuticular ornamentation (with pores of variable shape forming transverse bands) (M. eichorni Michalczyk & Kaczmarek, 2004, M. orthofasciatus Fontoura, Pilato, Lisi & Morais, 2009, M. vinciguerrae Binda & Pilato, 1992, M. furcatus (Ehrenberg, 1859)) in some qualitative or quantitative characters of the bucco-pharyngeal apparatus, and/or claws and of the eggs. The new species is also similar to two species today ascribed to the genus Macrobiotus but whose systematic position needs to be better analyzed, Macrobiotus lazzaroi Maucci 1986 and Macrobiotus pseudofurcatus Pilato, 1972. Minibiotus xavieri sp. nov. differs from them in some characters of the animal (narrower buccal tube, some characters of the claws) and of the eggs.

Download Full-text