Kyosuke Okuda

• Master of Agriculture
• Graduate School Research Student at Tokyo University of Agriculture

A new species of the assassin bug of the genus Pygolampis Germar, 1817 (Hemi- ptera: Heteroptera: Reduviidae: Stenopodainae), P. amamiko sp. nov., collected from the Amami Islands, Japan, is described and its morphological characters, including the genital structures, are illustrated. A key to the Japanese species of the genus is provided.

Sastrapada robustoides Putshkov, 1987 was recorded for the first time from Iriomote Island, the Ryukyu Islands, Japan, based on two males collected by artificial light at night.

Stachyotropha Stål, 1871 (Reduviidae, Stenopodainae) currently includes only two species: S. punctifera Stål, 1871 and S. miyamotoi Hidaka & Miller, 1959 only recorded from East Asia. This study reviews the genus Stachyotropha Stål, 1871 and its two described species. Based on the examination of the type specimens and the original descriptions, S....

Sastrapada lativentralis sp. nov. is described based on specimens that were previously collected from Ryukyus, Japan, and during field surveys. Additional specimens were also obtained and photographed alive during a recent field survey in Ry-ukyus. This species is characterized by a distinctively broad abdomen and very shortened hemelytra. It can b...

Neothodelmus typicus Distant, 1919 was collected from Yonaguni-jima Island in the Yaeyama Islands, the Ryukyus, Japan. This represents the first record of the genus and species from Japan.

Pygolampis striata Miller, 1940 was previously described, based on a single male specimen. However, there are no records of the species since then. The females and nymphs were not described and knowledge about their habitat is insufficient. This is the first record of the assassin bug Pygolampis striata Miller, 1940 from Japan and Indonesia. Here,...

The little-known assassin bug, Pygolampis breviptera Ren, 1981, is re-diagnosed, with redescription of previously unknown female. And Pygolampis breviptera is recorded in Vietnam for the first time. Photos of specimens are provided for easy recognition of this species.

We newly recorded Gardena brevicollis STÅL, 1871, Gardena muscicapa (BERGROTH, 1906), Ploiaria ryukyuana ISHIKAWA & TOMOKUNI, 2002, and Polididus armatissimus STÅL,1859 from from Amami-Ôshima Is.

We newly record Caunus noctulus HSIAO, 1977 from Ibaraki prefecture, Honshu, Japan.

I observed predation of Oncocephalus breviscutum Reuter, 1882 to Loxoblemmus sp. Okuda K., (2020) Observation of the predation by Oncocephalus breviscutum Reuter, 1882 in the field. yosegaki (179), 39.

In 2018, a North American lygaeid bug, Neortholomus scolopax )Say, 1831) was found in Kanto district, Japan for the first time. In our urgent survey, this species was collected from Ibaraki, Gunma, Saitama, Chiba, Tokyo and Kanagawa prefectures. Since this bug appeared suddenly in Japan in 2018, it is considered to be introduced very recently from...