Philomycidae
Megapallifera mutabilis
The Philomycidae are a small family of nudibranchs from the suborder of terrestrial snails ( gastropod ). You have no remnants of the original housing more.
Features
The body is vermiform, it will be extended to about 10 cm long. The species of the family have the body completely reduced. But there is another (empty ) shell bag available. The smooth coat extends over the entire back of the animals. The breathing hole ( Pneumostom ) and the genital opening sitting near the front end in a slot at the edge of the mantle. A keel is not available, a mucous gland at the tail end is missing. The foot is separated from the mantle by a pit. The sole is undivided, The jaw is streaky or finned, some species have a median projection. The penis is well developed and not divided, the epiphallus may be present or absent. There may be a love dart sac containing a small, conical love arrow. The atrium is not swollen.
Geographical distribution and behavior
The distribution area extends from the far east of Russia, Japan and China to Indonesia (Java and Sulawesi ). In addition, the family is in North and Central America and in northern South America prior to about Colombia. The species of the family feed mainly on fungi.
System
The family contains Philomycidae depending on the author about five to six genera with about 20 species and subspecies.
- Family Philomycidae J. Gray, 1847 Genus Philomycus Rafinesque, 1820
- Genus Pancalyptus Pilsbry, 1948
- Genus Pallifera Morse, 1864
- Genus Megapallifera Hubricht, 1956 ( originally proposed as a subgenus of Pallifera; Schileyko (2007) does not recognize the genus as an independent genus used by Tsai & Wu (2008). )
- Genus Meghimatium Hasselt, 1823
- Genus Granulilimax Minato, 1989
Phylogeny
After a first preliminary molecular analysis of the phylogenetic relationships within the family Philomycidae, but with only a few taxa, presented Tsai & Wu (2008 ) found that the family may be polyphyletic. The genus Arion, type genus of the Arionidae is in this cladogram within the family Philomycidae. However, these results contradict the morphological data.
Meghimatium
Philomycus
Pallifera
Megapallifera
Arion
Deroceras