A general term for insects belonging to the family Corydalidae in the order Neuroptera, or one of these species. These insects are large, with a wingspan of 5-17.5cm, and are yellowish brown or dark brown overall. Although their name sounds like they are dragonflies, they belong to a completely different taxonomic group. They are distributed from the tropics to temperate zones, and about 100 species have been recorded. Only five species are known in Japan, and adults appear near river basins from May to September, are active at night, and often fly to lights. The adult lifespan is short, about a few days to 10 days. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
脈翅目ヘビトンボ科Corydalidaeに属する昆虫の総称,またはそのうちの1種を指す。この仲間は大型で翅の開張5~17.5cm,全体に黄褐色ないし暗褐色を帯びる。名はトンボの類のようであるが,分類学上はまったく異なるグループに属する。熱帯から温帯にかけて分布し,約100種が記録されている。日本には5種のみ知られ,成虫は5~9月河川の流域近辺に発生し,夜間に活動し,しばしば灯火に飛来する。成虫の寿命は短く数日から10日ぐらいという。
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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