Rainbow stag

The Rainbow Stag is a bug in the that first appears in. It is a rare beetle that can be found in the summer months, from 7 PM to 8 AM.

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

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

In
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:

In
When donated to the museum, the Rainbow Stag can be found on a tree, near the stinkbug and honeybee. When the player ask for facts about the Rainbow Stag, Blathers will say the following:

Real-world 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).