jumping plant lice

Psyllidae, the jumping plant lice or psyllids, are a family of small plant-feeding insects that tend to be very host-specific, each plant-louse species feeding on just one plant species (monophagous) or a few closely related plants (oligophagous). They are found mainly on perennial plant hosts. Together with aphids, phylloxerans, scale insects and whiteflies, they form the group called Sternorrhyncha, which is considered to be the most "primitive" group within the true bugs (Hemiptera). They have traditionally been considered a single family, Psyllidae, but recent classifications divide make them one of seven families within the superfamily Psylloidea. If we consider the broader definition there are an estimated 4000 species placed in around 70 genera. Some species are considered as pests in citrus and other horticultural crops. The narrowly defined family Psyllidae does not have unambiguous support of monophyly.