materials from different regions of Russia are encoded as: FS RU CU UR WS SS MS CY NE NF KM AM SH KU

Ephemeridae
Ephemera vulgata Linnaeus, 1758 WS Finland
Ephemera strigata Eaton, 1892 AM SH
Ephemera shengmi Hsu, 1937 SS AM
Ephemera sachalinensis Matsumura, 1931 AM
Ephemera orientalis McLachlan, 1875 SS AM
Ephemera sp. SS

Polymitarcyidae
Ephoron (=Polymitarcys) virgo (Olivier, 1791) RU SS

Heptageniidae
Cinygma peterseni (Lestage, 1930) WS
Heptagenia flava Rostock, 1878 SS AM
Rhithrogena lepnevae Brodsky, 1930 SS
Genus sp. SS

Siphlonuridae
Siphlonurus linnaeanus (Eaton, 1871) WS
Siphlonurus palaearcticus (Tshernova, 1930) AM
Siphlonurus chankae Tshernova, 1952 SS
Siphlonurus sp. SS
Isonychia ussurica Bajkova, 1970 SS
Isonychia japonica Ulmer, 1920 SS
Genus sp. SS

Baetidae
Centroptilum luteolum (Müller, 1776) SS
Cloeoptilum pennulatum Eaton, 1870 Mongolia
Cloen dipterum (Linnaeus, 1761) SS
Cloen simile Eaton, 1870 Mongolia
Baetis spp. WS SS

Oligoneuriidae
Oligoneuriella sp. SS

Ephemerellidae
Drunella aculea (Allen, 1971) AM
Ephemerella ignita (Poda, 1761) WS
Ephemerella spp. SS AM Mongolia

Caenidae
Brachycercus sp. SS