螟蛉

1. • green rice caterpillar or similar insect larva
2. • adopted son (Etymology: Wasps of a particular species take caterpillars to their nest as food for their offspring, but it was mistakenly believed that the wasps were raising the caterpillars as their own young.)

Character by character

• 螟(míng)boring insect
• 蛉(líng)sandfly