An insect belonging to the order Hemiptera, suborder Homoptera, family Cicadidae. It is classified into the subfamily Chichi-Cicada, because the male lacks the dorsal valve of the sound organ. It is a small cicada with a body length of about 20 mm. Its body is black, densely covered with silvery gray scales, and there is a pair of triangular yellowish brown markings in the center of the mesonotum. Its wings are transparent, and the wing base membrane is red-orange. When the wings are folded, part of the hind wings protrudes in a triangular shape from the back. It lives on coniferous trees such as red pine, and appears in August and September. Its call is a monotonous chichi-chi... and similar to that of a type of morning cricket. It is endemic to Japan, and is found from southern Hokkaido to Kyushu. The closely related species, C. yezoensis , lives in Hokkaido, Sakhalin, and the Kuril Islands, and has a large, somewhat rounded body, about 25 mm long. It has the habit of flying while singing. [Masami Hayashi] [Reference] |©Toshio Sekiguchi "> Major types of cicadas (2) [specimen illustrations] Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend |
昆虫綱半翅目(はんしもく)同翅亜目セミ科に属する昆虫。雄の発音器の背弁を欠くことから、チッチゼミ亜科に分類される。小形のセミで、体長20ミリメートル内外。体は黒色で、銀灰色の鱗毛(りんもう)を密生し、中胸背中央には1対の三角形の黄褐色紋がある。はねは透明で、翅底膜(していまく)は赤橙(せきとう)色。はねを畳んだ際に、後翅の一部が三角形状に背面側に突出する。アカマツなどの針葉樹にすみ、8、9月に出現する。鳴き声は、チッチッ、……と単調で、ツユムシの一種の声に似る。日本特産種で、北海道南部から九州にかけて分布する。近縁種エゾチッチゼミC. yezoensisは北海道、樺太(からふと)(サハリン)、千島列島にすみ、体はやや丸みがあって大きく、体長25ミリメートル内外。鳴いたまま飛ぶ習性がある。 [林 正美] [参照項目] |©関口俊雄"> セミのおもな種類(2)〔標本画〕 出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例 |
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