Euconulinae

Euconulinae
Light cone ( Eoconulus fulvus )
Systematics
Superordinate : Heterobranchia Order : Lung snails (pulmonata) Subordination : Land snails (Stylommatophora) Superfamily : Trochomorphoid Family : Cones (Euconulidae) Subfamily : Euconulinae
Scientific name
Euconulinae
Baker , 1928

The Euconulinae are a worm - subfamily from the subordination of terrestrial snails (gastropod).

features

The right-hand wound housings are usually more or less flattened, conical. One genus ( Sabalimax ) has become a half- slug . There are usually 3 to 7 turns. The last turn is rounded or with a slight angle. The shell is thin and translucent. Radial or spiral stiffeners can be more or less pronounced on the surface of the housing. The surface is therefore highly glossy or rather matt and / or silky glossy. The navel is very small or closed.

In the male genital tract, the prostate lies directly against the fallopian tube. The spermatic duct (vas deferens) penetrates the apical part of the small or short epiphallus, which is separated from the penis by a simple constriction. In some species, a small blind sac (caecum) attaches to the penis. The penile retractor muscle attaches to the epiphallus (just before the transition to the penis) or to the apical part of the penis. The epiphallus, penis and caecum are connected by a membrane. The free fallopian tube has a glandular section. The sperm library is often very small or may even be absent.

differences

The subfamily Euconulinae differs from the other subfamily Microcystinae by the prostate, which lies directly next to the fallopian tube, the greatly reduced (or missing) spermathec, the epiphallus is connected to the penis by a membrane, and the caecum (blind sac), if present, sits near the base of the penis.

Geographical distribution and habitat

The subfamily is common worldwide. The taxa are mostly oviparous , rarely ovoviviparous .

Taxonomy

The taxon was established in 1928 by Horace Burrington Baker . It is the nominate subfamily of the Kegelchen family (Euconulidae).

• Subfamily Euconulinae Baker, 1928
  • Genus Afroconulus Van Mol & Van Bruggen, 1971
  • Genus Afroguppya de Winter & van Bruggen, 1992
  • Genus Afropunctum F. Haas, 1934
  • Genus Cancelloconus Rensch, 1932
  • Genus Coneuplecta Möllendorff, 1893
  • Genus Diepenheimia Preston, 1913
  • Genus Discoconulus Reinhardt, 1883
  • Genus Dryachloa Thompson & Lee, 1980
  • Genus Euconulus Reinhardt, 1883
    • Dark cone ( Euconulus praticola (Reinhardt, 1883))
    • Light cone ( Euconulus fulvus (OF Müller, 1774))
    • Forest cones ( Euconulus trochiformis (Montagu, 1803))
  • Genus Eurychlamys Godwin-Austen, 1899
  • Genus Guppya Mörch, 1867
  • Genus Habroconus Fischer & Crosse, 1872
  • Genus Kororia HB Baker, 1941
  • Genus Louisia Godwin-Austen, 1908
  • Genus Luchuconulus Pilsbry, 1928
  • Genus Macroceras Semper, 1870
  • Genus Palaua HB Baker, 1941
  • Genus Papuarion Van Mol, 1973
  • Genus Parasitala Thiele, 1931
  • Genus Sabalimax Tillier & Bouchet, 1989
  • Genus Serostena Iredale, 1941
  • Genus Turrisitala Iredale, 1933
  • Genus Velifera WG Binney, 1879

literature

• Anatolij A. Schileyko: Treatise on recent terrestrial pulmonate molluscs. Part 8. Punctidae, Helicodiscidae, Discidae, Cystopeltidae, Euconulidae, Trochomorphidae. Ruthenica, Supplement, 2 (8): 1035-1166, Moscow 2002 ISSN  0136-0027 , p. 1110.
• Philippe Bouchet, Jean-Pierre Rocroi, Bernhard Hausdorf, Andrzej Kaim, Yasunori Kano, Alexander Vorteilel, Pavel Parkhaev, Michael Schrödl, Ellen E. Strong: Revised Classification, Nomenclator and Typification of Gastropod and Monoplacophoran Families. Malacologia. 61 (1–2): 1–526, 2017 doi : 10.4002 / 040.061.0201

Individual evidence

1. ↑ Horace Burrington Baker: Minute American Zonitidae. Proceedings of the Academy of Natural Sciences of Philadelphia, 80: 1-44, Philadelphia 1928, p. 4
2. ↑ MolluscaBase: Euconulinae HB Baker, 1928