What kind of bee is this? It's so big, its head is yellow, there are black spots on the top, and its body is black and bright! !

This is a sawfly, which comes out in early spring and breeds in winter. This kind of bee is very effective in spreading pollen from large flowers. It lives in wood or among dried bamboos. Its larvae mainly eat pollen and nectar, and live independently, not in groups, unlike bees and wasps. Is our human friend,