Dyakiidae
Encyclopedia
Dyakiidae is a family
of air-breathing land snail
s, terrestrial
pulmonate gastropod mollusks in the superfamily Dyakioidea (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005
).
Dyakiidae is the only family in the superfamily Dyakioidea. This family has no subfamilies.
s lies between 26 and 30 (according to the values in this table).
The family also include Quantula striata
, the only known terrestrial gastropod to emit light.
Digestive system
characteristics: Buccal mass is small. The jaw is smooth. The stomach is very simple with weak muscles (as is the case in the majority of land snails). (This anatomy characteristics include family Staffordiidae
as as a part of Dyakiidae).
shows the phylogenic relationships of this family and superfamily with the other families within the limacoid clade
:
Family (biology)
In biological classification, family is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, class, order, genus, and species, with family fitting between order and genus. As for the other well-known ranks, there is the option of an immediately lower rank, indicated by the...
of air-breathing land snail
Land snail
A land snail is any of the many species of snail that live on land, as opposed to those that live in salt water and fresh water. Land snails are terrestrial gastropod mollusks that have shells, It is not always an easy matter to say which species are terrestrial, because some are more or less...
s, terrestrial
Terrestrial animal
Terrestrial animals are animals that live predominantly or entirely on land , as compared with aquatic animals, which live predominantly or entirely in the water , or amphibians, which rely on a combination of aquatic and terrestrial habitats...
pulmonate gastropod mollusks in the superfamily Dyakioidea (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005
Taxonomy of the Gastropoda (Bouchet & Rocroi, 2005)
The taxonomy of the Gastropoda as it was revised by Philippe Bouchet and Jean-Pierre Rocroi is currently the most up-to-date overall system for classifying gastropod mollusks...
).
Dyakiidae is the only family in the superfamily Dyakioidea. This family has no subfamilies.
Anatomy
In this family, the number of haploid chromosomeChromosome
A chromosome is an organized structure of DNA and protein found in cells. It is a single piece of coiled DNA containing many genes, regulatory elements and other nucleotide sequences. Chromosomes also contain DNA-bound proteins, which serve to package the DNA and control its functions.Chromosomes...
s lies between 26 and 30 (according to the values in this table).
The family also include Quantula striata
Quantula striata
Quantula striata, also known as Dyakia striata, is a species of medium-sized, air-breathing, tropical land snail. It is a terrestrial, pulmonate, gastropod mollusk in the family Dyakiidae. This species appears to be unique among terrestrial gastropods in that it is bioluminescent: Its eggs glow in...
, the only known terrestrial gastropod to emit light.
Digestive system
Digestive system of gastropods
The digestive system of gastropods has evolved to suit almost every kind of diet and feeding behavior. Gastropods as the largest taxonomic class of the mollusca are very diverse indeed: the group includes carnivores, herbivores, scavengers, filter feeders, and even parasites.In particular, the...
characteristics: Buccal mass is small. The jaw is smooth. The stomach is very simple with weak muscles (as is the case in the majority of land snails). (This anatomy characteristics include family Staffordiidae
Staffordiidae
Staffordiidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Staffordioidea ....
as as a part of Dyakiidae).
Genera
The family Dyakiidae includes the following 11 genera, with altogether 82 species (71 species up to 2007 + 11 new species in 2009):- AsperitasAsperitasAsperitas is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Dyakiidae.-Species :The genus Asperitas include 14 species:...
Gray, 1857 - 14 species - Bertia Ancey, 1887 - only one species: Bertia cambojiensisBertia cambojiensisBertia cambojiensis is a species of air-breathing land snail, terrestrial pulmonate gastropod mollusks in the family Dyakiidae.Bertia cambojiensis is the only species in the genus Bertia....
(Reeve, 1860) - DyakiaDyakia (gastropod)Dyakiia is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Dyakiidae.Dyakia is the type genus of the family Dyakiidae.-Species :The genus Dyakia include 22 species:...
Godwin-Austen, 1891 - type genus, 22 species - ElaphroconchaElaphroconchaElaphroconcha is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Dyakiidae.The generic name Elaphroconcha consist of Ancient Greek word ἐλαφρός that means "light" and of Ancient Greek word κόγχη that means "shell" .-Species :The genus Elaphroconcha...
Gude, 1911 - 10 species - EverettiaEverettiaEverettia is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Dyakiidae.The species within this genus are very difficult to identify from shells only, because the shells are all very similar.-Species :...
Godwin-Austen, 1891 - 15 species - Kalamantania Laidlaw, 1931 - only one species: Kalamantania whiteheadiKalamantania whiteheadiKalamantania whiteheadi is a species of air-breathing land snail, terrestrial pulmonate gastropod mollusks in the family Dyakiidae.Kalamantania whiteheadi is the only species in the genus Kalamantania.-Description:...
(Godwin-Austen, 1891) - Phuphania Tumpeesuwan, Naggs & Panha, 2007 - only one species: Phuphania globosaPhuphania globosaPhuphania globosa is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Dyakiidae.Phuphania globosa is the only species in the genus Phuphania....
Tumpeesuwan, Naggs & Panha, 2007 - Pseudoplecta Laidlaw, 1932 - only one species: Pseudoplecta bijugaPseudoplecta bijugaPseudoplecta bijuga is a species of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Dyakiidae.Pseudoplecta bijuga is the only species in the genus Pseudoplecta....
(Stoliczka, 1873) - Quantula Baker, 1941 - only one species: Quantula striataQuantula striataQuantula striata, also known as Dyakia striata, is a species of medium-sized, air-breathing, tropical land snail. It is a terrestrial, pulmonate, gastropod mollusk in the family Dyakiidae. This species appears to be unique among terrestrial gastropods in that it is bioluminescent: Its eggs glow in...
(Gray, 1834) - Rhinocochlis Thiele, 1931 - only one species: Rhinocochlis nasutaRhinocochlis nasutaRhinocochlis nasuta is a species of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Dyakiidae.Rhinocochlis nasuta is the only species in the genus Rhinocochlis....
(Metcalfe, 1852) - SasakinaSasakinaSasakina is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Dyakiidae.-Species :The genus Sasakina includes 4 species:* Sasakina oxyconus - the type species...
Rensch, 1930 - four species
Cladogram
The following cladogramCladogram
A cladogram is a diagram used in cladistics which shows ancestral relations between organisms, to represent the evolutionary tree of life. Although traditionally such cladograms were generated largely on the basis of morphological characters, DNA and RNA sequencing data and computational...
shows the phylogenic relationships of this family and superfamily with the other families within the limacoid clade
Limacoid clade
The limacoid clade is a taxonomic clade of air-breathing land snails, semislugs and slugs, terrestrial pulmonate gastropod molluscs in the informal group Sigmurethra.- Distribution :...
:
Further reading
- Laidlaw F. F.Frank Fortescue LaidlawFrank Fortescue Laidlaw was a British biologist who studied molluscs, a malacologist.He named a number of species of snails, including:* The land snail genus Colparion- Bibliography :...
(1931). "On a new sub-family Dyakiinae of the Zonitidae". Proceedings of the malacological Society of London 19: 190-201. abstract. - Schileyko A. A. (2003). "Treatise on recent terrestrial pulmonate mollusks. 10. Ariophantidae, Ostracolethaidae, Ryssotidae, Milacidae, Dyakiidae, Staffordiidae, Gastrodontidae, Zonitidae, Daudebardiidae, Parmacellidae". Ruthenica, Supplement 2. 1309-1466.