Hadrognathini

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: Polyphaga
Infraordo: Staphyliniformia
Superfamilia: Staphylinoidea

Familia: Staphylinidae
Subfamilia: Omaliinae
Tribus: Hadrognathini
Genera (2): Brachygnathellus – Hadrognathus
Name

Hadrognathini Portevin, 1929: 431

Type genus: Hadrognathus Schaum, 1852.

Synonymy

Eugnathates Mulsant & Rey, 1880: 386 [original vernacular name unavailable (Art. 11.7.2): not subsequently latinized; if found to be available then permanently invalid (Art. 39): based on preoccupied type genus]
Type genus: Eugnathus Mulsant & Rey, 1851 [preoccupied genus name, not Eugnathus Schönherr, 1833 (Coleoptera: Curculionidae) or Eugnathus Agassiz, 1836 (Pisces); syn. of Hadrognathus Schaum, 1852]

References
Primary references

Portevin, G. 1929. Histoire naturelle des Coléoptères de France. Vol. 1. Adephaga, Polyphaga: Staphylinoidea. Encyclopédie Entomologique (A) 12: xii + 649 pp., pls. 1–5. [original description: p. 431]

Additional references

I.Löbl & A.Smetana (eds). 2004 Catalogue of Palearctic Coleoptera. Vol. 2: Hydrophiloidea-Staphylinoidea.
Apollo Books, Stenstrup, Denmark ISBN 87-88757-74-9, p. 261