Rhipiphoridae; wedge-shaped beetle

Japanese: オオハナノミ(英語表記)Rhipiphoridae; wedge-shaped beetle
Rhipiphoridae; wedge-shaped beetle
A general term for insects of the Coleoptera family Metoecusidae. Most are around 10mm long. The body is streamlined, narrows backwards, and laterally compressed. The head is vertical. The elytra are long and slender, with pointed tips, and many open backwards, but some are completely lacking. The antennae are usually feathery in males and comb-like in females. Most larvae parasitize wasps, but some attach to beetles and cockroaches, and are known to undergo hypermetamorphosis. There are about 400 species known worldwide and about 10 species known in Japan. The black giant flower fly Metoecus satanus is around 10mm long, black all over, and the abdomen of the female is yellowish brown. It parasitizes the nests of the Japanese hornet and is distributed in Hokkaido, Honshu, Sakhalin, Tibet, etc. Others include Macrosiagon masutum and M. iwatai , which parasitize wasps, and several species whose habits are unknown. Species that parasitize beetles include Pelecotoma septentrionalis and Pelecotomoides tokejii .

Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information

Japanese:
鞘翅目オオハナノミ科の昆虫の総称。体長 10mm内外のものが多い。体は流線形で後方へせばまり,側扁する。頭部は垂直。上翅は細長く,先端がとがり,後方で開くものが多いが,なかには上翅をまったく欠くものもある。触角は普通雄では羽毛状,雌では櫛状である。幼虫はハチ類に寄生するものが多いが,甲虫類やゴキブリ類などにつくものもあり,過変態を行うことで知られている。世界に約 400種,日本に約 10種が知られる。クロオオハナノミ Metoecus satanusは体長 10mm内外,全体黒色で,雌の腹部は黄褐色である。クロスズメバチの巣に寄生し,北海道,本州,サハリン,チベットなどに分布する。このほかにドロバチ類に寄生するムモンオオハナノミ Macrosiagon masutum,イワタオオハナノミ M. iwataiなどがあり,また習性の知られていない種が数種記録されている。甲虫類に寄生する種としてはシバンオオハナノミ Pelecotoma septentrionalis,クチキオオハナノミ Pelectomoides tokejiiなどがある。

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