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Genus Cacopsylla

Cacopsylla pyricola 4th instar - Cacopsylla pyricola Arroyo willow psyllid - Cacopsylla curta - male Willow Psyllid - Cacopsylla curta - male Cacopsylla sp.? - Cacopsylla - female Tiny Insect - Cacopsylla annulata Cacopsylla sp.? - Cacopsylla curta - male Willow Psyllid - Cacopsylla Cacopsylla? - Cacopsylla curta
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 Cacopsylla
Synonyms and other taxonomic changes
Cacopsylla was erected to include species formerly treated as Psylla but not considered to be congeneric with Psylla alni and its relatives, which are normally associated with Betulaceae. A number of subgenera have been described, but the North American species have not been assigned to them (1)
Explanation of Names
Cacopsylla Ossiannilsson 1970
Numbers
>60 spp. in our area (2), >450 total (3)
Identification
Metatibia with 5 apical spurs
Range
Holarctic; widespread in our area, most diverse in the west
Food
About half of our native species (33 spp.) feed on Salix, most of these restricted to the west. Another large component (12 spp.) occurs on Rosaceae, especially Cercocarpus, all western. Other spp. use Adoxaceae (1 sp.) Betulaceae (2 spp.), Elaeagnaceae (3 spp.), Ericaceae (2 spp.), Grossulariaceae (3 spp.), & Sapindaceae (2 spp.)
Adventive spp. in our area use Roseaceae (3 spp.), Pittosporaceae (1 sp.), & Araliaceae (1 sp.)
Remarks
This is the largest nearctic psyllid genus, containing about 20% of described species in our area.