TABLE 2.

EnvFit results for each Cacopsylla species applied to nonmetric multidimensional scaling (NMDS) based on Bray–Curtis distances, with the following categories examined: Developmental stage, generation (seasonality), locality and sex. Significant p‐values are in bold

Psyllid species	Developmental stage	Generation (seasonality)	Developmental stage + generation	Locality	Sex
Cacopsylla pyri	r 2 = 0.053, p = 0.191, stress = 0.165	r 2 = 0.089, p = 0.263, stress = 0.165	r 2 = 0.243, p = 0.004, stress = 0.165	r 2 = 0.330, p = 0.001, stress = 0.165	r 2 = 0.054, p = 0.319, stress = 0.140
Cacopsylla pyricola	r 2 = 0.089, p = 0.002, stress = 0.206	r 2 = 0.040, p = 0.453, stress = 0.206	r 2 = 0.164, p = 0.005, stress = 0.206	r 2 = 0.032, p = 0.775, stress = 0.206	r 2 = 0.011, p = 0.478, stress = 0.208
Cacopsylla pyrisuga	r 2 = 0.036, p = 0.614, stress = 0.144	r 2 = 0.073, p = 0.065, stress = 0.144		r 2 = 0.006, p = 0.833, stress = 0.144	r 2 = 0.075, p = 0.143, stress = 0.124