Article · Wikipedia archive · Last revised Jul 19, 2026

Trigonochlamydidae

Trigonochlamydidae is a family of air-breathing land slugs, terrestrial gastropod molluscs in the clade Eupulmonata.

Last revised
Jul 19, 2026
Read time
≈ 3 min
Length
619 w
Citations
19
Source
Trigonochlamydidae
Temporal range:
Parmacellilla filipowitschi
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Order: Stylommatophora
Superfamily: Parmacelloidea
Family: Trigonochlamydidae
Hesse, 1882
Subfamilies and genera2
Diversity
9 genera, 11 species

Trigonochlamydidae is a family of air-breathing land slugs, terrestrial gastropod molluscs in the clade Eupulmonata (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).

Distribution

The native distribution of Trigonochlamydidae includes Caucasus,1 Iran and Turkey.3

Taxonomy

Previously, Trigonochlamydidae was placed in the superfamily Trigonochlamydoidea Hesse, 1882, in the subinfraorder Sigmurethra. This was the only family within that superfamily.4

The family Trigonochlamydidae is now classified within the limacoid clade, which itself belongs to the clade Stylommatophora, within the clade Eupulmonata (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).

The following two subfamilies have been recognized in the taxonomy of Bouchet & Rocroi (2005):

  • subfamily Trigonochlamydinae Hesse, 1882 – synonyms: Selenochlamydinae I. M. Likharev & Wiktor, 1980
  • subfamily Parmacellillinae Hesse, 19265

Genera

There are nine3 genera in the family Trigonochlamydidae with a total of 11 species:

Subfamily Trigonochlamydinae

Subfamily Parmacellillinae

Synonym:

  • Pseudomilax O. Boettger, 1881 is a synonym for various genera in Trigonochlamydidae.

Selenochlamys O. Boettger, 1883 has been removed from the Trigonochlamydidae to the Oxychilidae based on DNA evidence.8

Cladogram

The following cladogram shows the phylogenic relationships of this family with the other families in the limacoid clade:9

References

References

  1. "Family summary for Trigonochlamydidae". AnimalBase, last modified 26 August 2005, accessed 1 September 2010.
  2. MolluscaBase eds. (2024). MolluscaBase. Trigonochlamydidae Hesse, 1882. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=867826 on 21 August 2024
  3. Suvorov A. N. (2003). "A new species and genus of carnivorous slugs (Pulmonata Trigonochlamydidae) from West Transcaucasia". Ruthenica 13: 149–152. abstract.
  4. Sistemica (Spanish list of genera), cited 7 October 2008.
  5. Hesse P. (1926). "Die Nacktschnecken der palearktischen Region". Abhandlungen des Archiv für Molluskenkunde 2(1): 1–152. page 47 and page 54. plates 1–2.
  6. Kantor Yu I., Vinarski M. V., Schileyko A. A. & Sysoev A. V.(published online on 22 December 2009). "Catalogue of the continental mollusks of Russia and adjacent territories". Version 2.3.
  7. Schileyko A. A. (2003). "Treatise on Recent Terrestrial Pulmonate Molluscs. Part 11. Trigonochlamydidae, Papillodermidae, Vitrinidae, Limacidae, Bielziidae, Agriolimacidae, Boettgerillidae, Camaenidae." Ruthenica, Supplement 2(11): 1467–1626, Moscow. page 1467.
  8. Neiber, Marco T.; Walther, Frank; Hausdorf, Bernhard (October 2020). "Phylogenetic relationships of ghost slugs (Selenochlamys) and overlooked instances of limacization in Western Palaearctic Limacoidei (Gastropoda: Stylommatophora)". Molecular Phylogenetics and Evolution. 151 106897. Bibcode:2020MolPE.15106897N. doi:10.1016/j.ympev.2020.106897. PMID 32585288.
  9. Hausdorf B. (March 2000). "Biogeography of the Limacoidea sensu lato (Gastropoda: Stylommatophora): Vicariance Events and Long-Distance Dispersal". Journal of Biogeography 27(2): 379–390. doi:10.1046/j.1365-2699.2000.00403.x, JSTOR.