The taxonomic diversity of the IKIP Baetidae holdings currently consists of five species in two genera. A check-list of these taxa, arranged alphabetically, is provided below and the islands on which they were collected, from south to north, is given in brackets (the islands are designated by two-letter Island Codes). All determinations were made by Tatyana Tiunova (see IKIP EPHEMEROPTERA REPORT).

Genus Acentrella

Acentrella sibirica (Kaslauskas) [IT, UR]
 

Genus Baetis
 
Baetis bicaudatus Dodds [IT, UR]

Baetis pseudothermicus Kluge [IT, UR]

Baetis thermicus Ueno [KU]

Baetis sp. 1 [KU]

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