Composição acarina e descrição de espécies de Eriophyoidea em genótipos de amoreira-preta no Sul do Rio Grande do Sul

Abstract

Blackberry is a srhub of the Rubus genus from the Rosaceae family, and nowadays standing out in South America in Chile and Brazil as the largest producers. The planted area in Brazil has increased almost 500 ha, mainly in Rio Grande do Sul as a major producer. As in other crops, blackberry is affected by arthropod-pest as the mites, which 42 are from Eriophyoidea superfamily and associated with Rubus spp. all over the world. Thus, the objective of this work was to evaluate the mite fauna in genotypes of blackberry, as well as the association of Eriophyoidea superfamily mites to the crop. Were carried out 14 sampling times of mites, from leaves, flowers and fruits, in seven genotypes and one cultivar, from November 2015 to October 2016 in Pelotas, RS. Mites of the Eriophyoidea superfamily sampled on leaves, buds of branches and fruit were identified and illustrated. In the south of Brazil, mites of five families of phytophagous, two of predators and one of varied feeding habits are associated with blackberry, the predominant species were the generalist Tydeus californicus (Banks, 1904) and the phytophagous Neotetranychus asper (Feres & Flechtmann, 2000) and Diptacus n. sp. A new specie of diphylomioptide, Diptacus n. sp., are described and a supplementary description of Acalitus orthomerus (Keifer, 1951) is showed.