Darner dragonfly

The Darner Dragonfly (ギンヤンマ, Gin'yanma) is a large insect that flies slowly around town. It is quite common and is easily recognized by its thin body and large wings. It is worth 200 Bells prior to, where it is 230 Bells.

Donating to the museum
As with all insects in the, the Darner Dragonfly can be donated to the museum followed by a small talk by Blathers.

In
Although reluctant, Blathers will add the Darner Dragonfly to the museum's collection. He will also give a short speech about it;

The dragonfly can be found flitting about in the second room of the insect exhibit after being given to the museum. Every now and then, it comes in to rest on a patch of weeds in the center of the exhibition space.

In
Blathers will accept the Darner Dragonfly for addition to the museum's insect exhibit:

After donation, the Darner Dragonfly can be seen flying around on the lower level of the insect room. Occasionally, it will land on the water of the nearby pond for a few seconds.

In
Upon being donated, the dragonfly can be found in the first room of the bug exhibit, flying around the pond and occasonally resting on the fence. The exhibit has this to say about the Darner Dragonfly:

In
Blathers has this to say about the Darner Dragonfly:

Once donated, the Darner Dragonfly can be found on a stick in the pond next to the waterfall at the upper left area of the main exhibit with the Banded Dragonfly

Real-world information
Darner dragonflies are quite common in real life. They can be seen usually dashing around bodies of water such as lakes or ponds.

The creature in the games is mostly likely the lesser emperor (Anax parthenope), as this species is found throughout Europe, Asia, and northern Africa.