The taxonomic diversity of the IKIP Gerridae holdings currently consists of four species in three 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 Dr. Shyuji Tachikawa (see IKIP HEMIPTERA REPORT).

Genus Aquarius

Aquarius paludum (Fabricius, 1794) [KU, IT]

Genus Gerris

Gerris babai [KU]

Gerris yezoensis Miyamoto, 1958 [SH]

Genus Limnoporus

Limnoporus genitalis (Miyamoto, 1958) [KU, ZE, IT]

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