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TaxonomyBrowse
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Genus Psylla

Plant louse - Psylla floccosa aphid - Psylla sanguinea Underside of Alder Leaf - Psylla floccosa Green Jumping Plant Louse - Psylla carpinicola Nymphs - Psylla carpinicola small green insect - Psylla buxi IMG_2987 - Psylla sanguinea Psylla viridescens? - Psylla viridescens
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Hemiptera (True Bugs, Cicadas, Hoppers, Aphids and Allies)
Suborder Sternorrhyncha (Plant-parasitic Hemipterans)
Superfamily Psylloidea
Family Psyllidae
Subfamily Psyllinae
Genus Psylla
Synonyms and other taxonomic changes
Many species formerly included are now treated under Cacopsylla
Explanation of Names
Psylla Geoffroy, 1762
Numbers
9 spp. in our area, >100 total (1)
Identification
Antennae long, usually at least 2 times as long as the width of the head, approaching 2.5-3 times as long in P. sanguinea and the alder psyllids (P. alni, P. caudata, P. floccosa, P. viridescens). Genal processes well developed. Pterostigma usually present, but absent or diminutive in P. floccosa and P. buxi; female genitalia usually very long, except in P. sanguinea (2).
Range
Widespread in our area (1)
Food
Primarily Betulaceae (Alnus, Betula, Carpinus), as well as Prunus (Roseaceae) & Buxus (Buxaceae) (1)
Life Cycle
Overwintering occurs in the egg stage; feeding occurs on the apical shoots. There is usually one generation per year (3). Nymphs of several species are accompanied by a white flocculent wax (4)