Emperor butterfly

The Emperor Butterfly, also called Emperor, is an uncommon butterfly that is found around flowers in the summer months, late in the day. It is the only butterfly that can be found in the night. It is sold for 2,500 Bells.

Donating to the Museum
As with all fish and bugs in the series, the Emperor Butterfly can be donated to the Museum by talking to Blathers, the curator. When donating, Blathers will say the following upon receiving the Emperor Butterfly:

In Wild World
''Hoo. Ah. What have we here? An emperor, if I'm not utterly mistaken? Ah, no, please, don't bother taking it out of its cage! Protocols, you know, wot? I'm a but squeamish about insects, you see, and I don't fancy touching one.''

In City Folk
"The emperor butterfly's beautiful blue markings make it a popular gift in certain parts of the world. Hoo, yes, wonderful gift... Such gift givers should have their heads examined, I should think..."

It can be found in the bottom terrace, flying near or resting on the flowers with any other butterflies.

Bug Encyclopedia Information
Once an Emperor Butterfly has been caught, the player can find information about the insect in the bug menu. Below is the information:

In Wild World

 * Size: 115 mm.
 * Season: Summer.
 * Time: Midday
 * Their wings are iridescent, like the back of a CD.

In City Folk

 * Size: About 115 mm
 * Season: Summer
 * Time: Night
 * Their wings appear to be blue on one side, but quite plain on the other.

Further Information
Morpho menelaus, more commonly known as the Blue Morpho, is an exotic butterfly that can be found in Central and South America. It feeds primarily on rotten fruit, but in the larval stage, frequently eats other larvae of the same species.