The leaves are eaten by four gall-producing insects of the genus Pachypsylla, which do not cause serious damage to the tree.
ðə lˈiːvz ɑːɹ ˈiːʔn̩ baɪ fˈoːɹ ɡˈɔːlpɹədˈuːsɪŋ ˈɪnsɛkts ʌvðə dʒˈɛnəs pˈækɪpsˌɪlə, wˌɪtʃ duːnˌɑːt kˈɔːz sˈɪɹiəs dˈæmɪdʒ tə ðə tɹˈiː.