Galled leaves were significantly more asymmetric than ungalled leaves.
Maíra Honorato de Moura Silva, Jarcilene Silva de Almeida-Cortez, Estevão Alves Silva,Jean Carlos Santos 2015, 'Relationship between gall-midge parasitism, plant vigor, and developmental instabilityin Ouratea polygyna Engl (Ochnaceae) in a patch of a Brazilian Atlantic Forest', Acta Botânica Brasílicahttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062015000200274&lng=en&tlng=en. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
For anatomical and histometrical studies, transverse sections of young and mature, galled and ungalled samples were prepared.
Denis Coelho de Oliveira, Rosy Mary dos Santos Isaias 2009, 'Influence of leaflet age in anatomy and possible adaptive values of the midrib gallof Copaifera langsdorffii (Fabaceae: Caesalpinioideae)', Revista de Biología Tropicalhttp://www.scielo.sa.cr/scielo.php?script=sci_arttext&pid=S0034-77442009000100026. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)