11. The invertebrate fauna include spiders, beetles, dipterans, hemipterans , and hymenopterae. 12. The defining feature of hemipterans is their " beak " in which the modified predators. 13. Many hemipterans can produce sound for communication. 14. Most other hemipterans are predatory, feeding on other insects, or even small vertebrates. 15. In addition to protection, ants may provide other services in exchange for hemipteran honeydew. 16. A number of ant genera are recorded as tending groups of hemipterans to varying degrees. 17. As in other hemipterans , tessaratomids are nymphs ), hatch directly from the eggs. 18. Some hemipterans are used to produce dyestuffs such as carmine ( also called cochineal ). 19. Most hemipterans feed on plants, using their sucking and piercing mouthparts to extract plant sap. 20. Most hemipterans are phytophagous, using their sucking and piercing mouthparts to feed on plant sap.
