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Alebra wahlbergi
Family: Cicadellidae

This genus of four species is recognised by the presence of a forewing appendix. This is an entirely membranous area at the wingtip which is not bisected by any veins. The species are very similar; identification is complicated by the existence of different colour forms and ideally requires dissection of the male sternal apodemes (song apparatus).

In A. wahlbergi, there are no dark spots at the bases of the tibial spines. Very similar to A. coryli which is associated with hazel and has a longer vertex.

Occurs on a range of trees, especially, elm, sycamore maples, horse chesnut but not oak, as in A. albostriella. Found in southern Britain

Adult: July to September
Length 3.5-4.5 mm
Alebra wahlbergi
Adult: south London (August 2007) ©Joe Botting

Alebra wahlbergi Alebra wahlbergi
Adult: Dorset (August 2009) ©Mark Dunkling

Adult: north London (July 2008) ©Tristan Bantock

Alebra wahlbergi
Adult (dark form): Surrey (July 2009) ©Tristan Bantock