The taxonomic diversity of the IKIP Rhyacophilidae holdings currently consists of 14 species in 1 genus. 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 either Tatyana Arefina or Tokao Nozaki (see IKIP TRICHOPTERA REPORT).

Genus Rhyacophila
 
Rhyacophila arefini [KU, IT, UR]

Rhyacophila brevicephala [KU]

Rhyacophila hokkaidensis [KU, ZE, SH, IT, UR, SI]

Rhyacophila kawamurae [KU]

Rhyacophila mirabilis [KU, IT, UR, SI, KE]

Rhyacophila nipponica [KU, ZE, SH]

Rhyacophila retracta [KU, UR]

Rhyacophila sakhalinica [KU, IT, UR]

Rhyacophila transquilla [KU]

Rhyacophila sp. 2 [KU, SH]

Rhyacophila sp. a [KU, IT]

Rhyacophila sp. b [KU]

Rhyacophila sp. c [ZE]

Rhyacophila sp. d [ZE]

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