Cladus: Eukaryota
Supergroup: Opisthokonta
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Spiralia
Cladus: Lophotrochozoa
Phylum: Mollusca
Classis: Gastropodae
Subclassis: Orthogastropoda
Superordo: Heterobranchia
Ordo: Pulmonata
Subordo: Eupulmonata
Clade: Stylommatophora
Cladus: Orthurethra
Informal group: Sigmurethra
Superfamilia: Gastrodontoidea
Familia: Euconulidae
Subfamilia: Microcystinae
Genus: Piena
Species: P. grandis - P. palawai - P. parva
Name
Piena H.B. Baker, 1940: 106, 108
Type species: Philonesia (Piena) grandis H.B. Baker, 1940
References
* Baker, H.B. 1940. Zonitid snails from Pacific Islands, Part 2. Hawaiian genera of Microcystinae. Bernice P. Biship Museum, Bulletin 165: 105-201, pl. 21-42.
* Schileyko, A.A. 2002. Treatise on Recent terrestrial pulmonate molluscs. Part 8: Punctidae, Helicodiscidae, Discidae, Cystopeltidae, Euconulidae, Trochomorphidae. Ruthenia, Supplement 2: 1035-1166.
