Rainbow stag

The Rainbow Stag (ニジイロクワガタ, Nijīrokuwagata) beetle is a rare beetle found in the. It can be found between June and September, from 7 p.m. to 8 a.m..

In
Upon donating to the Museum, Blathers the curator will say:

"Rainbow stags have the honor of being called the world's most beautiful stag beetles, eh wot? Even the insect's belly has this rainbow design. making it one of the less vile bugs I've encountered. In fact, this may be the only insect whose underside I can view without retching..."

It can be found on a cedar tree to the left of the top terrace in the insect exhibit.

In New Leaf
Upon donation to the museum, the Rainbow Stag can be found on a tree in the back of the upper right room of the Insect section. The exhibit has this to say about the Rainbow Stag:
 * "Rainbow stags are called the most beautiful of stag beetles because of their metallic-rainbow color. Not only are their wings a pretty rainbow color, but their bellies are as well. They are quite laid back, but they can be seen every now and then fighting to protect their territories."

Encyclopedia Information
When the player has caught the Rainbow Stag, they can find information about the insect in the bug menu. Below is the information regarding the Rainbow Stag:

Further information
The rainbow stag beetle gets the name from its unique coloring, which appears to change color when looked at in different angles and in different light within its also unique, metallic looking body. It can be found in Queensland, Australia, climbing on trees. As mentioned in the "Bugs and Fish" window (also known as Encyclopedia), it is sturdier than it appears. It can lift up other stag beetles (such as other rainbow stags) and throw them during fights, using its mandibles (the horns sticking out from near the mouth).