Trioza kiefferi Giard, 1902
Rhamnus alpina, Spanish Pyrenees, Huesca © Ben van As
Ramnus alaternus, France, dép Var, Toulon, Saint-Mandrien-sur-Mer © Stéphane Claerebout
Rhamnus alaternus, alpina, lycioides subsp. oleoides, pumila.
the identification if the pictures above is very unsatisfactory. Although the galling of R. alpina would suggest a mite gall, kiefferi is its only gall-causer mentioned in the literature (Cogolludo, Houard). The picture by Hoaurd of the gall of kiefferi on Rh. alaternus, reproduced below, probably shows an extreme example; on the internet circulate pictures, atrributed to kiefferi with much more conical galls. But is is not sure if the galls of Trioza marginepunctata always remain as low as illustrated by Houard.
Rhamnus alarnus, from Houard (1909)
Béguinot (2002a,h, 2003a, 2007a, 2012a), Buhr (1965a), Cogolludo (1921a), Conci, Rapisarda & Tamanini (1996a), Dauphin & Aniotsbehere (1997a), Houard (1909a), Ouvrard, Burckhardt & Cocquempot (2015a), Seljak (2020a).