“…Of the 28 subfamilies identified (total 4700 species) in the world (Remaudiere and Remaudiere, 1997;Fraval, 2006;Turpeau-Ait Ighil et al, 2011), 450 species have been identified on cultivated plants (Blackman and Eastop, 2000). In Algeria, according to Laamari et al (2010) and Aroun (2015), Rosaceae, Asteraceae, Poaceae and Solanaceae are the most infested host plant W. nervata is an american species, introduced to Europe and first reported in England in 1973 on roses (Barjadze et al, 2011). In North America, the species is apparently heteroecious, with host alternation between primary host roses and secondary host Ericaceae (Arbutus, Arctostaphylos, Pieris).…”