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