Works in Japan

A new quadrannulate Orobdella Oka, 1895 species, Orobdella koikei sp. n., is described on the basis of six specimens collected from Hokkaido, Japan. In addition, an emended descri…

Commensal leucothoid amphipods have been collected from the canals of their sponge hosts throughout the Ryukyu Archipelago, Japan. Eleven new species are described in the genus Le…

Commensal leucothoid amphipods have been collected from the branchial chambers of their ascidian hosts throughout the Ryukyu Archipelago, Japan. Seven new species are described in…

A new species of horsehair worm, Chordodes formosanus sp. n., is described and compared to a closely related species, C. japonensis. Although both species possess the same six cut…

The East Asian millipede genus Riukiupeltis Verhoeff, 1939 is revised, and is restricted to a single species, R. jamashinai Verhoeff, 1939. Examination of the type specimens and f…

The following eleven Empria species are reported from Japan: E.candidata (Fallén, 1808), E.japonica Heidemaa & Prous, 2011, E.liturata (Gmelin, 1790), E. loktini Ermolenko, 1971, …

Stephanidae Leach, 1815 (Hymenoptera: Stephanoidea) from China are revised. Five genera are reported from China: Foenatopus Smith, 1861; Megischus Brullé, 1846; Parastephanellus E…

Insects are one of the most diverse eukaryotic groups on the planet, with one million or more species present, including those yet undescribed. The DNA barcoding system has been d…

The cosmopolitan genus Callitriche (Plantaginaceae) is a clade of small herbaceous plants that encompasses terrestrial and aquatic species. In Japan, six Callitriche species have …

The predatory stink bug genus Picromerus Amyot & Serville, 1843 (Hemiptera, Heteroptera, Pentatomidae, Asopinae) comprises 11 species found in the Northern Hemisphere. In Japan, t…

The small genus Coelophthinia Edwards, 1941 of the subfamily Gnoristinae (Diptera, Mycetophilidae) is so far known to harbour four species from the Palaearctic, Nearctic and Neotr…

Although the Japanese species of Urostylididae are of interest to not only heteropteran taxonomists, but also to the public, an illustrated key for all species of the family from …

Exechia is a diverse genus of small fungus gnats, widespread in the Holarctic Region, while the fauna is largely unknown elsewhere, such as in the Afrotropical and Oriental Region…

Pygolampis striata Miller, 1940 is described based on a single male specimen. However, there are no records of the species since then. Therefore, the females and nymphs have not b…

Caenis rivulorum Eaton, 1884 is widely distributed and has been reported from a wide range in the Palearctic region.We report this species from Japan for the first time, from five…

Holorusia Loew, 1863 (Diptera: Tipulidae) is a relatively large crane fly genus with a wide distribution in the Afrotropic, Australasian–Oceanian, Eastern Palearctic, Oriental, an…

The lace bug genus Eritingis Drake and Ruhoff, 1962 is widely distributed in the Australian and Oriental Regions, whereas only a single species, E. recentis (Drake and Poor, 1937)…

The liverwort flora of Ayan was first investigated one hundred and fifty years after the first exploration of vascular plants. A number of factors has determined the relatively hi…

The lace bug species Acalypta marginata (Wolff, 1804) has to date been widely known to occur in the Palaearctic Region but has not been recorded from Japan.Acalypta marginata is r…

To date, the stink bug species Caystrus orientalis Zhang and Lin, 1985, was known to occur only in China.A species known as “Caystrus sp.” and “Neodinus sp.” in Japan has been ide…

The potential fish species pool of the Kubo, Tochikura, and Ichinono river systems (tributaries of the Iwai River, Kitakami River drainage), Iwate Prefecture, northern Japan, was …