Species list, Checklist of Superfamily Hydrophiloidea (Histerids) for Alaska Peninsula (Alaska, USA)

Class	Insecta Linnaeus, 1758 Insects, True insects	119 348 522	Families Genera Species	Taxom
Subclass	Pterygota Lang, 1888 Winged insects	119 348 522	Families Genera Species	Taxom
Infraclass	Neoptera van der Wulp, 1890 Modern Wing-folding insects	116 344 516	Families Genera Species	Taxom
Superorder	Holometabola Heider, 1889 Holometabolous Insects	96 304 473	Families Genera Species	Taxom
Order	Coleoptera Linnaeus, 1758 Beetles, Coleopterans	25 108 174	Families Genera Species	Taxom
Suborder	Polyphaga Emery, 1886 Polyphags	22 80 109	Families Genera Species	Taxom
Infraorder	Staphyliniformia Lameere, 1900	8 40 64	Families Genera Species	Taxom
Superfamily	Hydrophiloidea Latreille, 1802 Histerids, Hydriphiloids, Hydrophilids	2 3 4	Families Genera Species	Taxom

List of families for Alaska Peninsula
2 Families width 4 Species

Hydrophilidae Latreille, 1802	Silver Water Beetles	3	Species	Taxom
Helophoridae Leach, 1815	Water scavenger beetles	1	Species	Taxom

Genera for Alaska Peninsula
3 Genera with 4 Species

Species list for Alaska Peninsula
4 Species

Cercyon (Cercyon) fimbriatus Mannerheim, 1852	Water scavenger beetle
Cercyon (Cercyon) luniger Mannerheim, 1853	Bigtooth aspen
Helophorus (Rhopalohelophorus) auricollis Eschscholtz, 1822	Toothed pogonatum moss
Helopium agabus ♰ J. O. Westwood, 1854

Subnodes of Hydrophiloidea with occurrences in Alaska Peninsula

Family	Helophoridae Leach, 1815 Water scavenger beetles	1 1	Genus Species	Taxom
Family	Hydrophilidae Latreille, 1802 Silver Water Beetles, Water beetles, water scavenger beetle, Water scavenger beetles, Water scawenger beetles	2 3	Genera Species	Taxom

Links, sources and further information