Within tree distribution of a gall-inducing Eurytoma (Hymenoptera, Eurytomidae) on Caryocar brasiliense (Caryocaraceae)

Revista Brasileira de Entomologia

Germano Leão Demolin Leite²  Ronnie Von Dos Santos Veloso¹  Farley Willian Souza Silva²  Rafael Eugênio Maia Guanabens²  G. Wilson Fernandes¹ 

[1],Universidade Federal de Minas GeraisMontes Claros MG ,Brazil

关键词: Cerrado;    insect distribution;    insect galls;    pequi;    trichomes;    Cerrado;    distribuição espacial de insetos;    insetos indutores de galhas;    pequi;    tricomas;   

DOI  :  10.1590/S0085-56262009000400015

来源: SciELO

【 摘 要 】

For the first time, we identified the insect herbivore that induces one of the most conspicuous galls on the leaves of Caryocar brasiliense Camb. (Caryocaraceae), a widespread, typical cerrado woody plant of large economic importance. The gall inducing organism is a new and undescribed species of Eurytoma sp. (Hymenoptera, Eurytomidae). Furthermore, we recorded its spatial distribution within C. brasiliense trees. More Eurytoma galls were found on the eastern tree slope, followed the southern and northern slopes. More galls were found in the interior of the tree crown, i.e., on the proximal portion of the stems compared to the terminal portion. At the leaf level, more galls were found on the median region compared to the distal or proximal, perhaps due to the lower trichome density found in there. Leaf colonization by Eurytoma sp. may initiate at the leaf margin but after colonization reaches 50% the central portion starts to be colonized.

【 授权许可】

CC BY-NC-ND   
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