120715 – 豆娘

豆娘和蜻蜓同屬蜻蛉目,卻屬不同亞目。兩者在形態上相似,差別主要在兩者休息時的姿態和頭部的形狀。豆娘休息時雙翅通常靠攏一起,蜻蜓則平躺展開;豆娘的複眼分得很開,蜻蜓的則距離較近。

上圖應為雌性的三斑鼻蟌 (Rhinocypha perforata perforata),是蜻蛉目 Odonata 均翅亞目 Zygoptera 中的一種。

Advertisements

4 thoughts on “120715 – 豆娘

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s