Hemiptera / Aphids / Mealybugs

Hemiptera /hɛˈmɪptərə/ (Latin hemipterus (“half-winged”)) or true bugs are an order of insects comprising over 80,000 species within groups such as the cicadas, aphids, planthoppers, leafhoppers, bed bugs and shield bugs. They range in size from 1 mm (0.04 in) to around 15 cm (6 in), and share a common arrangement of sucking mouthparts.^[3] The name "true bugs" is often limited to the suborder Heteroptera.^[4] Many insects commonly known as "bugs", especially in American English, belong to other orders; for example, the lovebug is a fly^[5] and the May bug and ladybug are beetles.^[6]

Most hemipterans feed on plants, using their sucking and piercing mouthparts to extract plant sap. Some are hematophagous, while others are predators that feed on other insects or small invertebrates. They live in a wide variety of habitats, generally terrestrial, though some species are adapted to life in or on the surface of fresh water. Hemipterans are hemimetabolous, with young nymphs that somewhat resemble adults. Many aphids are capable of parthenogenesis, producing young from unfertilised eggs; this helps them to reproduce extremely rapidly in favourable conditions.

--- Wikipedia