Table 1. Results of model validation.

Model	Area of calibration	AUC	Sensitivity	Specificity	TSS
NRM	North America	0.922	0.943	0.861	0.805
RCM	UK, Ireland, Piedmont (Italy)	0.652	0.746	0.514	0.261
avNIRM	North America+UK, Ireland, Piedmont (Italy)	0.910* (sd = 0.0008)	0.942*	0.860*	0.802*

NRM = Native Range Model, RCM = Reciprocal Model, avNIRM = averaged Native+Invasive Range Model.

“*”indicates averaged values.