Trioza urticae
Sap-sucking hemipteran bug
From Wikipedia, the free encyclopedia
Trioza urticae is a sap-sucking hemipteran bug in the family Triozidae which creates galls on the leaves of nettles (Urtica species). It was described by the Swedish biologist and physician, Carl Linnaeus in 1758.
| Trioza urticae | |
|---|---|
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Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Clade: | Pancrustacea |
| Class: | Insecta |
| Order: | Hemiptera |
| Suborder: | Sternorrhyncha |
| Family: | Triozidae |
| Genus: | Trioza |
| Species: | T. urticae |
| Binomial name | |
| Trioza urticae | |
| Synonyms | |
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Description of the gall
Galls are most obvious in August and September, when young leaves at the top of a shoot, above the summer growth are hairy, crinkled and have depressions containing a flat psyllid nymph. Heavilly infested leaves are stunted and much darker than the unaffected leaves. There are two or three generations a year and psyllid populations are at their peak in the autumn; hence when the galls are easily seen. The autumn generation overwinters in turf or evergreens.[1][2][3]
Host plants include common nettle (Urtica dioica), small nettle (Urtica urens) and Urtica membranacea.[4]
Distribution
Found all over Europe.
