Corduliidae

...In Honshu, in addition to this subspecies, the large (males about 5.5 cm, females about 6 cm) Ooyezotombo, which can be called a lowland type, can be seen in the summer, but there are also many intermediate-sized ones, making it difficult to distinguish between the two. There are about nine other species of Corduliidae dragonflies in northern Japan, including Karakanetombo, Takanetombo, Koezotombo, Hosomimoritombo, Hanebiroezotombo, Torafutombo, and Ootorafutombo, and there are also three southern species of Minamitombo in the Ogasawara Islands and Ryukyu Islands. [Shojiro Asahina]...

*Some of the terminology that mentions "Corduliidae" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…本州ではこの亜種と別に低地型とも称すべき大型(雄約5.5cm，雌約6cm)のオオエゾトンボが夏季に見られるが，中間の大きさのものも多く，両者の確実な区別はつけがたい。エゾトンボ科Corduliidaeの昆虫は，このほかカラカネトンボ，タカネトンボ，コエゾトンボ，ホソミモリトンボ，ハネビロエゾトンボ，トラフトンボ，オオトラフトンボなどが北部日本に約9種を数え，また小笠原諸島，琉球諸島にはミナミトンボに入る南方種が3種ある。【朝比奈 正二郎】。…

※「Corduliidae」について言及している用語解説の一部を掲載しています。

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