Arytainilla spartiophila (Foerster) is native to central and western Europe and a specialist herbivore on Scotch broom (Cytisus scoparius [L.] Link; Fabaceae). This psyllid has been released for biological control and become established in exotic habitats where Scotch broom is invasive (Australia, New Zealand). Accidentally introduced into North America, it is known in the Pacific Northwest from California, Oregon, and Washington, and in Canada from British Columbia. Virginia has remained the only eastern North American record. Based on fieldwork in 2015 and 2016, Georgia, North Carolina, and South Carolina are added to the psyllid's known eastern distribution. Its syntopy with Arytaina genistae (Latreille) at a site in western North Carolina represents the first eastern North American locale where both immigrant Palearctic psyllids of Scotch broom have been found. Adults (mainly males) of this univoltine species appeared in mid-April, numbers declined by mid- to late May when populations became female-biased, and females were present until the first half of June.
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