Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Upcoming Events

National Moth Week photos of insects and people. Here's how to add your images.

Photos of insects and people from the 2019 BugGuide Gathering in Louisiana, July 25-27

Discussion, insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama

Photos of insects and people from the 2011 gathering in Iowa


Genus Psylla

Plant louse - Psylla floccosa Jumping Plant Louse - Psylla floccosa Nymphs - Psylla carpinicola Skirted green bugs - Psylla carpinicola hopper with transparent amber wings - Psylla buxi Psyllid? - Psylla floccosa Psyllid - Psylla carpinicola - male Psylla species - Psylla buxi
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
9 spp. in our area, >100 total (1)
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).
Widespread in our area (1)
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)