green rice caterpillar or similar insect larva; 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.)

damselfly; lacewing

sandfly fever

green lacewing

Odonata, order consisting of about 6,000 species of dragonflies and damselflies

adopted son

the sword moves like a dragon-fly (modern idiom); fig. unexpected winning move; unconventional gambit