Abstract
In this study we recorded the occurrence of galls and host plants in understory areas of Floresta Ombrofila Densa, in the Floresta Nacional de Saraca-Taquera in Porto Trombetas, north of Para, Brazil. We recorded 112 gall morphotypes distributed in 65 families and 33 species of host plants, being Cecidomyiidae (Diptera) the most important group of galling insects. The plant families that showed more gall richness were Fabaceae with 18 morphotypes, Bignoniaceae with 14, Lauraceae and Sapotaceae with 12, and Burseraceae with 10 galling species. The genera Adenocalymma (Bignoniaceae), Pouteria (Sapotaceae), Inga (Fabaceae) and Protium (Burseraceae) and the species Adenocalymma neoflavidum (Bignoniaceae) and Ocotea sp. (Lauraceae) were the most diverse host plant taxa. Gall richness in the studied forest is high when compared to others Brazilian biomes, as Cerrado and Mata Atlântica. These results show the importance of Amazon region to diversity of entomogenous galls in the Brazil.
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