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Trichochermes walkeri is a very distinctive psyllid with unmistakeably marked wings. There are several species of Psyllidae with complex dark patterning that can be superficially similar, but the elongate, pointed wings and venation clearly mark the species as a triozid.
Locally common in southern England, and occurs rarely as far north as Cumbria. Its host is Rhamnus cathartica (purging buckthorn), on which it produces a leaf-margin rolling gall (below)
Adult: June to October
Length ~3.5 mm
|Adult: Surrey (August 2009) ©Tristan Bantock
|Adult: Nottinghamshire (May 2008) ©Jerry Clough
||Adult: Hampshire (August 2009) ©Mark Dunkling