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Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Spiralia
Cladus: Lophotrochozoa
Phylum: Mollusca
Classis: Gastropoda
Subclassis: Heterobranchia
Infraclassis: Euthyneura
Cohors: Tectipleura
Subcohors: Panpulmonata
Superordo: Eupulmonata
Ordo: Stylommatophora
Subordo: Helicina
Infraordo: Limacoidei
Superfamilia: Trochomorphoidea

Familia: Dyakiidae
Genus: Dyakia
Species: D. clypeus – D. densestriata – D. euconus – D. granaria – D. hugonis – D. janus – D. kintana – D. mackensiana – D. perstriata – D. retrorsa – D. rumphii – D. salangana – D. sannio

Dyakia Godwin-Austen, 1891

Type species: Helix hugonis Pfeiffer, 1863, by original designation.


Godwin-Austen H.H. 1891: On a collection of Land-shells made In Borneo by Mr. A. Everett, with Descriptions of supposed new species. Part II. Zonitidae and Helicidae. Proceedings of the Zoological Society of London, 1891: 22–47.

Dyakia 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.[3]

The genus Dyakia include 22[2] species:

Dyakia chlorosoma Vermeulen, Liew & Schilthuizen, 2015
Dyakia clypeus (Mousson, 1857)
Dyakia densestriata Schepman, 1896[4]
Dyakia euconus Sykes, 1905[5]
Dyakia granaria (Bock, 1881)[5]
Dyakia janus (Beck, 1837)
Dyakia kintana (De Morgan, 1885)
Dyakia mackensiana (Souleyet, 1841)
Dyakia moluensis Godwin-Austen, 1891
Dyakia hugonis (L. Pfeiffer, 1863) - the type species
Dyakia perstriata Sykes, 1905[5]
Dyakia? retrorsa[6]
Dyakia rumphii (Von Den Busch, 1842)
Dyakia salangana (Martens, 1883)
Dyakia sannio (Pfeiffer, 1854)


Dyakia striata is a synonym for Quantula striata, the only known terrestrial gastropod to emit light[7]


Godwin-Austen H. H. (1891) "On a collection of Land-shells made In Borneo by Mr. A. Everett, with Descriptions of supposed new species. Part II. Zonitidae and Helicidae". Proceedings of the Zoological Society of London for the year 1891: 22-47, p. 29.
Tumpeesuwan C., Naggs F. & Panha S. (31 August 2007) "A new genus and new species of dyakiid snail (Pulmonata: Dyakiidae) from the Phu Phan range, northeastern Thailand". Raffles Bulletin of Zoology 55(2) Archived July 22, 2009, at the Wayback Machine: 363-369. PDF
Bouchet, Philippe; Rocroi, Jean-Pierre; Frýda, Jiri; Hausdorf, Bernard; Ponder, Winston; Valdés, Ángel & Warén, Anders (2005). "Classification and nomenclator of gastropod families". Malacologia. Hackenheim, Germany: ConchBooks. 47 (1–2): 1–397. ISBN 3-925919-72-4. ISSN 0076-2997.
Schepman M. M. (1896). "The Mollusca of the Dutch Scientific Borneo-Expedition, with description of the new species". Notes from the Leyden Museum 17: 145-162, plate 2-4.
Sykes E. R. (1905). "On three species of Dyakia from Western Sumatra". 227-228.
"Mollusca. Testacellidae and Zonitidae". 1908.
Isobe, M; Uyakul, D; Goto, T; Counsilman, J. J. (1988). "Dyakia bioluminescence--1. Bioluminescence and fluorescence spectra of the land snail, D. Striata". Journal of Bioluminescence and Chemiluminescence. 2 (2): 73–9. doi:10.1002/bio.1170020204. PMID 3213594..

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