Seasonal Abundance of Hemipterans onCaryocar brasiliense(Malpighiales: Caryocaraceae) Trees in the Cerrado

Abstract

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Seasonal Abundance of Galling Insects (Hymenoptera) onCaryocar brasiliense(Malpighiales: Caryocaraceae) Trees in the Cerrado

“…The greatest numbers of Sycophila sp. and Z. armillatus, parasitoids and predators of Eurytoma sp., respectively, in the winter probably indicate that their populations depend on their prey and follows those of the galling insects (Oberg et al 2008;Venturino et al 2008;Leite et al 2012d, e).…”

Spatial Distribution of Phytophagous Insects, Natural Enemies, and Pollinators onLeucaena leucocephala(Fabaceae) Trees in the Cerrado

“…Most ant visits to extrafloral nectaries may foster flower or fruit production and reduce pest damage to L. leucocephala trees. Budding leaves and developing flowers before the rainy season are common in perennial plants in the Cerrado (Almeida et al 1998;Felfini et al 1999;Pedroni et al 2002;Almeida et al 2006;Leite et al 2006), allowing these plants to increase their photosynthetic area when phytophagous insect populations are small (Leite et al 2012).…”

“…Horizontal branch stratification in relation to cardinal points may affect insect abundance and richness. This occurs due to the wind direction and intensity (Leite et al 2011a,b,c); insolation (Unsicker & Mody 2005), microclimate formed by the plant canopy (Basset 1991;Leite et al 2011a), and herbivore preference for spaces free of natural enemies (Unsicker & Mody 2005;Leite et al 2012). Plants offer significant resources for biodiversity, and their branches and leaves may alter the environment by shading, which affects moisture and evapotranspiration, and can serve as a refuge for insect herbivores and natural enemies by creating vertical stratification (Brandle et al 2004).…”

A New Species ofDikrellaOman, 1949 (Hemiptera: Cicadellidae: Typhlocybinae) Found onCaryocar brasilienseCambess. (Caryocaraceae) in Minas Gerais State, Brazil

“…The study was developed in a savannah ecosystem ("Cerrado") in Montes Claros municipality, north of Minas Gerais State, Brazil (43 ∘ 55 7.3 W; 16 ∘ 44 55.6 S; altitude 943 m a.s.l.). The climate and vegetation characteristics are considered in Leite et al [10,11].…”

“…Studying the relationships of insects with pequi tree or souari nut (Caryocar brasiliense Cambess., Caryocaraceae), a new species of Dikrella was found [10]. According to Leite et al [11] the species is classified as constant, occurring throughout the year, and more abundant in summer and autumn. The species is found sucking seedlings with potential to become a pest in commercial crop of C. brasiliense.…”