Abstract

In this chapter we review the available information of the distribution of galling insects on Brazilian Tropical Dry Forests and discuss the possible mechanisms and processes leading to the trends reported. The number of studies conducted in TDFs so far are extremely limited. Only four studies were conducted on Tropical Dry Forests from South America. In spite of the fact that these studies were conducted on different types of Tropical Dry Forests, generalizations were attempted. A trend can be observed indicating low gall inducing insect species richness. The low level of secondary chemistry in low diverse vegetation seems the most plausible explanation for the results unveiled. The regional colonizers from adjacent vegetation types may influence gall-inducing insects richness in the Brazilian Tropical Dry Forests.

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