species 1,768 observations
Alder Sucker
Psylla alni
Field notes
Psylla alni is a species of psyllid, a plant-feeding hemipteran in the family Psyllidae. It is the type species of Psylla, which is the type genus in its family.
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3
native plants
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Range
Greener is more native, amber more introduced; paler is less certain. How this was decided