Limax canapicianus
| Limax canapicianus | ||||||||||||
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Limax canapicianus |
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| Scientific name | ||||||||||||
| Limax canapicianus | ||||||||||||
| Pollonera , 1885 |
Limax canapicianus is a slug -Art from the family of the slug (Limacidae) that the subordination of terrestrial snails belongs (gastropod). The species is endemic to the Graian Alps in Piedmont (Italy).
features
Limax canapicianus is stretched out to 14 cm long. The body is light chestnut brown with rounded, black spots. The coat shield is pointed at the rear end. The breathing hole is roughly in the middle of the mantle shield. The keel is short and a little lighter brown. The sole of the foot is uniformly white, the edge of the sole is studded with black dots. The black points can also be almost absent or limited to the mantle shield and sides (var. Ocellatus ). The antennae are a little darker than the coat and body.
In the genital apparatus, the hermaphroditic gland is comparatively small and lanceolate. The hermaphroditic duct (ductus hermaphroditicus) is thin, initially straight, then strongly spiraled. The egg ladder is almost straight and has large glandular appendages (albumin gland and prostate). The penis is about three quarters of the length of the body and is heavily twisted. The apical part is slightly pinched off and clearly thickened; it ends hemispherical. The spermatic duct is thin, not spiraled and not very twisted. It opens into the penis a little before the end of the penis. The penile retractor muscle starts directly at the apex, i.e. clearly from the opening of the seminal duct into the penis. In relation to the length of the slightly constricted and thickened part of the penis end, the spermatic duct opens close to the hemispherical end.
Similar species
Limax canapicianus is outwardly similar to the tiger's nose ( Limax maximus ). In contrast to this, the rear part of the jacket shield is pointed. The thickened, slightly detached end of the penis is also present in the genital apparatus, but the penile retractor is positioned directly at the apex; in L. maximus it starts laterally and clearly in front of the end of the penis. The spermatic duct ends well before the end of the penis, in L. maximus at the same level as the penis retractor. In the latter type, the mouth of the spermatic duct and the attachment point of the penis retractor sit approximately in the middle of the thickened and slightly offset end piece of the penis. The few observations on copulation show more similarities with the black snail ( L. cinereoniger ). The two partners are attached to a suitable surface not via a thread of mucus (as in L. maximus ), but through the tips of the tail (as in L. cinereoniger ). The photo taken by Claudio Pulcher should probably correspond to the "pine cone shape" of the Black Schnegel.
Geographical distribution and habitat
The area of Limax canapicianus is limited to a small area in the Graic Alps (Piedmont, Italy). The species occurs there in deciduous forests.
Way of life
Very little is known about the way of life of the species. The following is known about copulation behavior. The back of the two partners is attached to a wall (or wall). The bodies are closely intertwined, the heads hang down and are pulled back under the mantle shields. The penes are closely intertwined and are about 10 cm long when turned out. The bases of the penis are very close to each other. The upper part is whitish in color, the lower, shorter part is bluish due to the hemolymph. In the phase documented by the photo, the end part of the intertwined penes is somewhat thickened, the penis combs are in place.
Taxonomy
The species was first described by Carlo Pollonera in 1885. The type material came from Monte Soglio near Forno Canavese near Rivara ( Province of Turin , Piedmont , Italy). In 1888 he described the species again and also presented the variety Limax canapicianus var. Ocellatus n.var. on. The variety has fewer points on the shield and on the sole of the foot, and the points on the back are missing. The points are arranged in two rows on the side. The variety occurs at the Locus typicus together with the typical form. The taxon is now considered a bona species .
supporting documents
literature
- Pollonera, Carlo 1888: Appunti di malacologia. Bollettino dei Musei di Zoologia ed Anatomia Comparata della Reale Università di Torino, 3 (51): 1-4, Turin. Online at Biodiversity Heritage Library , plate 3. Plate 3
- Manganelli, Giuseppe, Marco Bodon, Leonardo Favilli & Folco Giusti 1995: Fascicolo 16. Gastropoda Pulmonata. In: Minelli A., S. Ruffo & S. La Posta: Checklist delle specie della fauna italiana. Pp. 1-60, Calderini, Bologna.
Individual evidence
- ↑ Natura Mediterraneo Pictures of Copulation by Claudio Pulcher
- ^ Pollonera, Carlo 1885: Elenco dei molluschi terrestri viventi in Piemonte. Atti della Reale Accademia delle Scienze di Torino, 20 (5): 517-545 Online at Biodiversity Heritage Library (p. 519).
- ↑ Limax gallery in alphabetical order - Clemens M. Brandstetter's website ( Memento of the original from 23 August 2011 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ Fauna Europaea - Limax canapicianus
- ↑ Animal Base - Limax canapicianus
