Ephemeridae

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
Ordo: Ephemeroptera
Subordo: Furcatergalia
Infraordo: Scapphodonta
Superfamilia: Ephemeroidea

Familia:Ephemeridae
Subfamilia: Ephemerinae - Hexageniinae - Icthybotinae - Palingeniinae
Overview of genera (10)

Afromera – Denina – Eatonica – Eatonigenia – Ephemera – Hexagenia – Litobrancha – Parabaetis – Pentagenia – Phthartus

[Source: Catalogue of Life: 2019 Annual Checklist - complete genera list PLUS GBIF Backbone Taxonomy]
References
Links

https://web.archive.org/ Catalogue of Life: 2019 Annual Checklist
Global Biodiversity Information Facility. 2019. GBIF Backbone Taxonomy. Checklist dataset. Taxon: Ephemeridae.

Vernacular names
한국어: 하루살이과

Ephemeridae is a family of mayflies with about 150 described species found throughout the world except Australia and Oceania. These are generally quite large mayflies (up to 35 mm) with either two or three very long tails. Many species have distinctively patterned wings.

Ephemerids breed in a wide range of waters, usually requiring a layer of silt as the nymphs have strong legs which are adapted for burrowing (the group is sometimes known as burrowing mayflies). The nymphs are largely carnivorous and collect their food either through predation or scavenging.
Ephemera simulans male
References

Chinery, Michael Collins Guide to the Insects of Britain and Western Europe 1986 (Reprinted 1991)
McGavin, George C. Insects and Spiders 2004
Fauna Europaea
Nomina Insecta Nearctica