Citrella

Citrella is a genus of small, often brightly colored, leafhoppers belonging to the family Cicadellidae. These insects are native to the Americas and are known for their distinctive appearance and behavior. Citrella species are typically characterized by their elongated bodies, which can range in color from green to yellow or orange, often with black or brown markings. They are found in a variety of habitats, including forests, grasslands, and agricultural areas.

The life cycle of Citrella species is typical of leafhoppers, involving four stages: egg, nymph, subadult, and adult. Adults are known for their ability to produce a loud, buzzing sound by rubbing their hind wings together, which is used for communication and to deter predators. This sound is often described as a high-pitched, whirring noise.

Citrella species play a role in the ecosystem as both predators and prey. As adults, they feed on plant sap, while their nymphs are predators, feeding on other small insects. This dual role helps to regulate populations of other insects and contributes to the overall health of their habitats.

The genus Citrella includes several species, with the most well-known being Citrella chalybea, commonly known as the green leafhopper. This species is particularly notable for its vibrant green color and its ability to produce a loud, distinctive buzzing sound. Citrella species are generally considered beneficial due to their role in controlling pest populations and their contribution to the biodiversity of their habitats. However, some species can be considered pests in agricultural settings, where they can feed on crops and transmit plant diseases.