Psylloidea[ ] is a Taxonomic rank of Hemiptera, including the jumping plant lice and others which have recently been classified as distinct families. Though the group first appeared during the Early Jurassic, modern members of the group do not appear until the Eocene, and Mesozoic members of the order are usually assigned to the possibly Paraphyly family Liadopsyllidae.
Families
The following
Extant taxon families are included:
[Burckhardt D, Ouvrard D, Percy DM (2021) An updated classification of the jumping plant-lice (Hemiptera: Psylloidea) integrating molecular and morphological evidence. European Journal of Taxonomy 736: 137–182. DOI]
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Aphalaridae (includes Phacopteronidae, now a subfamily)
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]
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Calophyidae
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Carsidaridae (includes Homotominae)
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]
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Liviidae
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Mastigimatidae
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]
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Psyllidae
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Triozidae
In addition, the following extinct families are recognised:
Economic importance
Some psylloids are economically important pests:
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Diaphorina citri (Liviidae), the asiatic citrus psyllid is native to southern Asia; it has spread to most Citrus-growing regions. It is a vector of Liberobacter asiaticum, the bacterial greening disease.
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Trioza erytreae (Triozidae), the African citrus psyllid is a pest of citrus and some other Rutaceae. Like Diaphorina citri it is a vector of "greening disease". The psyllid is primarily an Afrotropical pest.
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Trioza perseae (Triozidae), the avocado psyllid forms galls on the leaves of Avocado, Persea americana. Other psyllid pests of avocado include Trioza anceps, Trioza aguacate and Trioza godoyae
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Trioza apicalis (Triozidae), the carrot psyllid is an important pest of the cultivated Carrot, Daucus carota (Apiaceae).
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Bactericera cockerelli (syn. Paratrioza cockerelli) (Triozidae), the potato psyllid feeds on Potato and Tomato (Solanaceae); sporadic infestations have occurred in potato-growing areas of the USA, causing symptoms knows as "potato yellows".
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