From Nookipedia, the Animal Crossing wiki
The Fruit Beetle (コガネムシ, Koganemushi) is a very common, small, metallic green beetle found on fruit and non-fruit trees at any time of the day, between July and September. It can be sold for 100 Bells. It first appeared in Animal Crossing: Wild World and re-appeared in Animal Crossing: City Folk and Animal Crossing: New Leaf. It resembles the yellow Scarab Beetle.
Donating to the museum
In Wild World
"Just because they are considered pretty, these tend to fetch a high price. I simply don't understand how anyone could find this bug appealing in the least. Perhaps if I was peeling it off my foot... Hoo hoo!"
It can be found in the second room of the insect exhibit on the sixth tree to the left.
In City Folk
"Fruit beetles resemble short, squat versions of dynastid beetles. But aren't dynastid beetles a type of fruit beetle? I suppose it's all a popularity contest, in the end..."
It can be found in the top terrace of the insect exhibition, on the second cedar tree from the right.
In New Leaf
The Fruit Beetle can be found on a tree on the right side of the upper right room of the insect section.
The fruit beetle can be found in both Japan and the northeastern United States. It is also known as the Japanese Beetle. As larvae, they have six legs, and when resting form a C-shape. While in the game they are found on trees, they are actually found on flowers. Their favorite fruits are figs and peaches, and they also enjoy eating flowers. They are considered a pest insect in gardens, as they tend to infest flowers such as lilies. They make a chirping sound, which sounds similar to the noise that bees make.
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