What kind of insect is this? It seems that my vegetable leaves have been bitten by this bug, and they are all small holes.

Flea beetles, commonly known as "soil collapse" and "soil jumping".

This is just a yellow striped flea beetle on your vegetable leaf.

According to body color and body shape, there are also apple blue flea beetle (wave thin flea beetle)

Su 'ao Tibial Jumping Nail

Yellow concave edge flea beetle

In Costa Rica, Central America, French photographer Settley first captured the silver jumping armor.

Let's take a look at the jumping armor:

Lepidoptera is an insect of Coleoptera (Chrysomelidae), which is distributed all over the world. Generally less than 6 mm (0.25 inch), dark or metallic, with swollen hind feet, suitable for jumping.

It is an important crop pest. Adults eat leaves and larvae eat roots. Some spread plant diseases, such as potato early blight. It mainly harms cruciferous vegetables, but also solanaceous fruits, melons and beans. Spring and autumn are serious.