A general term for insects belonging to the Dipteran order, family Blepharoceridae. Adults resemble crane flies, with long bodies and legs and broad wings. In addition to the usual wing veins, the wings have mesh-like folds. These folds were formed when the wings folded during the pupal stage. The larvae and pupae live attached to rocks in mountain streams with strong currents. The larvae are flattened dorsally and ventrally, consisting of seven segments, and have circular suckers on the midline of the first to sixth abdominal segments. The pupae are oval and flattened. They have a pair of respiratory discs on the dorsal side of the pronotum, and this morphology is one of the characteristics that distinguish the species. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
双翅目アミカ科Blepharoceridaeに属する昆虫の総称。成虫はガガンボに似て体と脚は長く,翅は幅広い。翅には通常の翅脈のほかに網目状の折り目(しわ)がある。このしわは,さなぎ時代に翅が折りたたまれてできたものである。幼虫とさなぎは,山地渓流の流れの激しい場所で岩石上に固着して生活している。幼虫は背腹に扁平,7節よりなり,腹部第1~6節正中線上に円形の吸盤をもつ。さなぎは楕円形で扁平。前胸背面に1対の呼吸盤をもち,その形態は種を区別する一つの特徴となる。
出典 株式会社平凡社世界大百科事典 第2版について 情報 |
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