Methlini

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: Hydroporinae
Tribus: Methlini
Genera (2): Celina – Methles
References

Wolfe, G.W. 1985: A phylogenetic analysis of plesiotypic hydroporine lineages with an emphasis on Laccornis Des Gozis (Coleoptera: Dytiscidae). Proceedings of the Academy of Natural Sciences of Philadelphia, 137: 132–155.
Wolfe, G.W. 1988: A phylogenetic investigation of Hydrovatus, Methlini and other plesiotypic hydroporines (Coleoptera: Dytiscidae). Psyche, 95(3-4): 327–344. DOI: 10.1155/1988/17890