2, gently cut off the wings about autumn frost, fly low and fall in love with the wild pond. -Dragonflies written by Wang Gan in the Song Dynasty
3, dragonflies may be good dragonflies, constantly flying around. -Song's interpretation of "Song 76 Fu"
4. Go to the atrium and count the flowers. Dragonflies fly to Yutou. -Liu Yuxi's Spring Poems in the Tang Dynasty
No one crossed the long fence, only dragonflies and butterflies were flying. -Fan Chengda's "Four Seasons of Pastoral Fun" in the Song Dynasty
6. Xiao He only shows a sharp corner, on which stands a dragonfly. -Yang Wanli's Little Pool in the Song Dynasty
No one landed on the long fence, only dragonflies and butterflies were flying. -Du Fu in Tang Dynasty
8, see through the butterfly, some water flies slowly. -Du Fu's "Two Songs of Qujiang"
9, flowers leave butterfly powder, bamboo dragonfly beads. -(Southern Liang Dynasty) Xiao Gang's "After Late Days"
10, jade singing clothes truss, dragonfly fishing line. -Du Fu's Five Congratulations in the Tang Dynasty
Odonata, invertebrates, Insecta, Odonata, Heteroptera. Generally, the body is large, the wings are long and narrow, and the membranous and reticular veins are extremely clear. Vision is extremely sensitive, with 3 eyes; Antenna 1 pair, thin and short; Chewing mouthparts. The abdomen is slender, flat or cylindrical, with anal appendages at the end. Feet are thin and weak with hooks and thorns, which can catch pests when flying in the air. Juvenile hydra, breathing through rectum, trachea and gills in water. Generally, it takes more than 1 1 times to molt, and it takes more than 2 years to climb out of the water along the aquatic plants, and finally molt and emerge as adults. Larvae can prey on old and other small animals in the water, and sometimes the same kind will eat each other. Adults can not only prey on mosquitoes and flies, but also pests such as butterflies, moths and bees, so they are beneficial insects.