An insect belonging to the family Polytrichum, order Coleoptera, family Polytrichum. A major pest of sweet potatoes, found in the Ryukyu Islands, Ogasawara Islands, and other tropical regions. There are records of its occurrence in southern Kyushu, but it does not appear to have taken root. It is black-brown with reddish-brown prothorax, mesothorax, antennae, and legs. The upper wings shine indigo blue. It is long and slender with a slightly swollen posterior body, resembling an ant. Both adults and larvae feed on sweet potato tubers and vines, and also on seaside morning glory. When these insects feed on the tubers, they give off a bitter taste and an unpleasant odor, making them inedible. [Takehiko Nakane] Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend |
昆虫綱甲虫目ミツギリゾウムシ科に属する昆虫。南西諸島や小笠原(おがさわら)諸島のほか、熱帯地域に広く分布するサツマイモの大害虫。南九州に発生の記録があるが、定着していないらしい。黒褐色で前・中胸、触角、脚(あし)は赤褐色。上ばねは青藍(せいらん)色に光る。細長くて後体部はやや膨れ、アリに似ている。成虫、幼虫ともサツマイモのいもやつるに食い入り、海浜のグンバイヒルガオなどにもつく。いもは、この虫が食い入ると味が苦くなり、不快なにおいがして食用にならなくなる。 [中根猛彦] 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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