Platyla
Smooth Mulmnadel ( Platyla polita ) ( Hartmann, 1840)
The genus Platyla is a genus of the family of Mulmnadeln ( Aciculidae ) from the order of Architaenioglossa. With 25 recent and six fossil species Platyla is the most diverse genus of Mulmnadeln; it has been known since Bartonium (41,3 to 38) ( Paleogene ). The recent nature Platyla polita ( Hartmann, 1840) is known since the Miocene; the recent case of this kind can not be distinguished from the fossil.
- 4.1 Literature
- 4.2 Notes and references
- 4.3 online
Features
The housing of the representatives of the genus Platyla vary from 1.15 to 5.6 mm in height and from 0.4 to 1.9 mm in width (thickness). You are hochkonisch to almost cylindrical, with up to eight whorls. You are always more than twice as high as wide. They are smooth and shiny with a few isolated growth lines, only Platyla lusitanica has a little more clearly trained growth lines. A seam edge is present, but clearly designed differently. Some species have a neck ridge, whose shape is intraspecific highly variable. It is usually formed on the strongest at the base of the housing.
The translucent, whitish body is in relation to housing comparatively small, slim and short. The head is offset by an angle to the edge of the sole furrow from the neck. The snout far vorstreckbar. The thread-like antennae are long and can be completely withdrawn. The eyes are located at the base of the sensor. The sole is edged by a weaker and a stronger longitudinal furrow formed by the body. The cover on the rear part of the foot is quite large and has 2 ½ to 2 ¾ whorls on.
The animals are dioecious. The comparatively few eggs, which are deposited by the females, are very large in proportion to body size.
Similar genera
The Platyla species the housing are smooth. The housings of the other genera of the Mulmnadeln have a clearly pronounced sculpture.
Geographical distribution, occurrence and life
The species of the genus come from the Iberian Peninsula in the west across Central Europe, the Balkan Peninsula to the western Ukraine and Asia Minor. In the north, the area extends as far north Germany.
The oldest known species of the genus Platyla is Platyla eocaena ( Oppenheim, 1895 ) from the Bartonium ( Eocene Paleogene ). The species is also the oldest species of the family Mulmnadeln.
Taxonomy and systematics
The taxon was erected in 1856 by Alfred Moquin - Tandon. Type species is Acme dupuyi Paladilhe, 1868 by subsequent determination by Welter Schultes (2012 ). A junior synonym is:
- Hyalacme P. Hesse 1917
Currently, over 35 species are assigned to the genus Platyla:
- Platyla albanica Subai, 2012
- Platyla alta ( Clessin, 1911)
- Platyla banatica ( Rossmaessler, 1842)
- † Platyla callosa (O. Boettger, 1870), Burdigalian, Miocene
- Beaded Mulmnadel ( Platyla callostoma ( Clessin, 1911) )
- Platyla corpulenta Subai, 2009
- Platyla cryptomena ( Folin & Berillon, 1877)
- Platyla curtii (Wagner, 1912)
- Platyla dupuyi ( Paladilhe, 1868)
- Platyla elisabethae ( Pintér & Szigethy, 1973)
- † Platyla eocaena ( Oppenheim, 1895), Bartonium, Eocene
- Platyla falkneri Boeters, Gittenberger & Subai, 1989
- Platyla Fehéri Subai, 2009
- Platyla foliniana ( Nevill, 1879)
- Petite Mulmnadel ( Platyla gracilis ( Clessin, 1877) )
- Platyla jankowskiana ( Jackiewicz, 1979)
- † Platyla klemmi ( Schlickum & Bush, 1972), Pliocene
- Platyla lusitanica ( Holyoak & Seddon, 1985)
- Platyla maasseni Boeters, Gittenberger & Subai, 1989
- Platyla micro spiral ( Pini, 1885)
- Platyla minutissima Boeters, Gittenberger & Subai, 1989
- Platyla orthostoma ( Jackiewicz, 1979)
- Platyla peloponnesica Boeters, Gittenberger & Subai, 1989
- Platyla perpusilla ( Reinhardt, 1880)
- Platyla pezzolii Boeters, Gittenberger & Subai, 1989
- Platyla pinteri ( Subai, 1976)
- Smooth Mulmnadel ( Platyla polita ( Hartmann, 1840) ) Platyla polita polita ( Hartmann, 1840)
- Platyla polita regina ( Subai, 1977)