Navegando por Autor "Veloso, Ronnie Von Dos Santos"

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Seasonal abundance of galling Insects (Hymenoptera) on Caryocar brasiliense (Malpighiales: Caryocaraceae) trees in the cerrado
(Florida Entomologist, 2013-09) Veloso, Ronnie Von Dos Santos; Leite, Germano Leão Demolin; Zanuncio, José Cola; Fernandes, Geraldo Wilson; Almeida, Chrystian Iezid Maia; Pereira, José Milton Milagres; Serrão, José Eduardo; Soares, Marcus Alvarenga
Caryocar brasiliense Camb. (Malpighiales: Caryocaraceae) trees have a wide distribution in the Cerrado, a tropical Brazilian savanna, with high diversity and endemism. This plant is protected by federal laws and is untouched in deforested areas of the Cerrado. This situation increases the damage to leaves from galling insects (Hymenoptera). We studied populations of galling insects and their natural enemies on C. brasiliense trees for 3 successive yr during each season in the Cerrado. A globoid gall-inducing Eurytoma sp. (Hymenoptera: Eury- tomidae) and its parasitoid Sycophila sp. (Hymenoptera: Eurytomidae) adults and predator Zelus armillatus (Lepeletier and Serville) (Hemiptera: Reduviidae) on the leaves were most abundant in the winter. The numbers of vein galls correlated negatively with the numbers of discoid and spherical galls, and the numbers of spherical galls correlated negatively with the numbers of discoid galls on C. brasiliense leaflets. Increased percentages of defoliation were correlated with reductions in the percentages of leaflets with total galls and leaflet area with total galls. Increased numbers of Sycophila sp. and decreased numbers of Ablerus magistretti Blanchard (Hymenoptera: Aphelinidae) were correlated with reduction in the numbers of Eurytoma sp. Numbers of Quadrastichus sp. (Hymenoptera: Eulophidae) and A. magistretti correlated negatively with the numbers of Sycophila sp. Increased numbers of Z. armillatus were correlated with reduction in the numbers of Eurytoma sp. and its galls and parasitoids. We concluded that this differential temporal distribution of galling insects and their natural enemies was influenced by plant phenology and time of colonization on C. brasiliense leaves.
Seasonal damage caused by herbivorous insects on Caryocar brasiliense (Caryocaraceae) trees in the Brazilian savanna
(Revista Colombiana de Entomología, 2018-01) Veloso, Ronnie Von Dos Santos; Zanuncio, José Cola; Ferreira, Paulo Sergio Fiúza; Serrão, José Eduardo; Ramalho, Francisco de Souza; Almeida, Chrystian Iezid Maia; Leite, Germano Leão Demolin
Caryocar brasiliense (Caryocaraceae) trees have a wide distribution in the Brazilian savanna. This plant is protected by federal laws and is untouched in deforested areas of the Brazilian savanna. This situation increases the damage to leaves, flowers, and fruits from chewing insects. We studied populations of herbivorous Lepidoptera, Coleoptera, and Hymenoptera and their natural enemies on C. brasiliense trees for three successive years during each season in the Brazilian savanna. Phytophagous insects were most abundant at the beginning of winter and with more species and diversity in the summer. Natural enemies were most abundant in the spring and in the winter and with highest species and diversity at end of the winter. Fruits bored by Carmenta sp. (Lepidoptera: Sesiidae) and Naupactus sp.3 (Coleoptera: Curculionidae) on the leaves were highest in the summer. Fruits scraped by Naupactus sp.l and sp.2 were more numerous in the spring and summer, percentage of defoliation in the autumn. Apoptus sp. (Coleoptera: Elateridae) on the leaves in the spring, and leaf miners (Lepidoptera) in the winter. In the case of natural enemies, Crematogaster sp. (Hymenoptera: Formicidae) were most abundant on the leaves and in the flowers in the winter and spring, and on the fruits in the spring when new leaves and flowers are formed. The number of Zelus armillatus (Hemiptera: Reduviidae), Holopothrips sp. (Thysanoptera: Phlaeothripidae), and the complex of spiders were greater on the leaves in the winter; and Trybonia sp. (Thysanoptera: Phlaeothripidae) was most abundant on the leaves in the autumn