Derallus

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: Hydrophiloidea

Familia: Hydrophilidae
Subfamilia: Hydrophilinae
Tribus: Berosini
Genus: Derallus
References

Makhan, D. 2005: Three new Derallus species from Suriname (Coleoptera: Hydrophilidae). Calodema, 3: 19–21.
Oliva, A. 2010: Redescription of Derallus strigipennis Orchymont, 1940 (Coleoptera: Hydrophilidae), new records and a key to species of Derallus Sharp 1882. Revista del Museo Argentino de Ciencias Naturales (n.s.), 12(1): 91–97. PDF

Derallus is a genus of water scavenger beetles in the family Hydrophilidae. There are about six described species in Derallus.[1][2][3]
Species

These six species belong to the genus Derallus:

Derallus altus (LeConte, 1855)
Derallus ambitus d'Orchymont, 1940
Derallus angustus Sharp, 1882
Derallus intermedius Oliva, 1995
Derallus rudis Sharp, 1882
Derallus terraenovae Oliva, 1983

References

"Derallus Report". Integrated Taxonomic Information System. Retrieved 2019-09-24.
"Derallus". GBIF. Retrieved 2019-09-24.

"Derallus genus Information". BugGuide.net. Retrieved 2019-09-24.