Hello, I'm an expert in entomology, the study of insects. I'd be happy to help you identify the characteristics of a Japanese beetle.

The Japanese beetle (Popillia japonica) is a species of beetle in the family Scarabaeidae. Here are some key features to help you identify them:


1. Size: They are about 1/2 inch (12–15 mm) in length.

2. Color: They have a metallic green color on the back with copper-colored wings. The wings are solid green in younger beetles.

3. Shape: They are oval-shaped and somewhat rounded.

4. Antennae: They have clubbed antennae, which means the end part of the antenna is enlarged.

5. Legs: Their legs are also a reddish-brown color.

6. Behavior: They are known for their voracious appetite and can cause significant damage to plants, particularly those in the rose family.

Here's the translation in Chinese:

你好，我是昆虫学领域的专家，昆虫学是研究昆虫的学科。我很乐意帮助你识别日本甲虫（Popillia japonica）的特征：


1. 大小：它们大约有1/2英寸（12-15毫米）长。

2. 颜色：它们的背部呈金属绿色，翅膀为铜色。幼年甲虫的翅膀是纯绿色的。

3. 形状：它们呈椭圆形，有些圆润。

4. 触角：它们有棒状触角，这意味着触角的末端部分是扩大的。

5. 腿部：它们的腿部也是红褐色的。

6. 行为：它们以贪食著称，对植物，特别是蔷薇科植物，能造成严重的损害。

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They can devour most of the foliage on favored plants like roses. Look for leaves that are ��skeletonized�� (only have veins remaining). This is a tell-tale sign of Japanese Beetles. ... Grubs damage grass when overwintering in the soil, as they eat the roots of lawn grasses and garden plants.read more >>