Copelatus sociennus

Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Ecdysozoa
Cladus: Panarthropoda
Phylum: Arthropoda
Subphylum: Hexapoda
Classis: Insecta
Cladus: Dicondylia
Subclassis: Pterygota
Cladus: Metapterygota
Infraclassis: Neoptera
Cladus: Eumetabola
Cladus: Endopterygota
Superordo: Coleopterida
Ordo: Coleoptera
Subordo: Adephaga

Familia: Dytiscidae
Subfamilia: Copelatinae
Genus: Copelatus
Species: Copelatus sociennus

Copelatus sociennus is a species of diving beetle. It is part of the subfamily Copelatinae in the family Dytiscidae. It was described by J. Balfour-Browne in 1952.[1][2] The species can be found on Coloane and in Seac Pai Van. It feeds on Nelumbo nucifera.[3]
References

"Dytiscidae Species List at Joel Hallan's Biology Catalog. Texas A&M University". Archived from the original on 31 October 2014. Retrieved 30 August 2015.
Copelatus, Integrated Taxonomic Information System (ITIS) Report. Retrieved 8 June 2012.
Manfred A. Jäch; Lanzhu Ji (1998). Water Beetles of China. Vol. 2. p. 371. ISBN 9783901606014.