ABSTRACT
ABSTRACT Nemorimyza Frey, 1946 (Diptera, Agromyzidae) is a genus of leaf-miner flies, with only five known species, some potentially polyphagous. Nemorimyza posticata (Meigen, 1830) is recorded from Brazil here for the first time. We provide a diagnosis of this species, including images of the male terminalia. We also provide a key for the five Neotropical species of the genus Nemorimyza, with host and distribution information for each species.
ABSTRACT
Abstract Antispastis Meyrick, 1926 is a poorly known genus of leaf-mining micromoths endemic to the Neotropics, with still uncertain taxonomic position within the Yponomeutoidea. In the present study, the egg, larva and pupa of A. clarkei Pastrana, previously known only from Argentina, are described and illustrated with the aid of optical and scanning electron microscopy. Data on life history, including histology of the mine, are also provided. Family placement of the genus is reassessed based on comparison of morphology and DNA sequences with closely related lineages. The larvae form blotch mines on the upper surface of Solanum L. (Solanaceae) leaves, feeding on palisade parenchyma in all instars. Pupation occurs outside the mine, in an inverted basket-like, large-meshed cocoon constructed on the plant surface. DNA analysis of Cytochrome oxidase I gene of A. clarkei revealed interspecific differences averaging 10% with A. xylophragma, which provided species separation matching morphological differences. Antispastis was closely related phylogenetically to Digitivalva, clustering in the Acrolepiinae together with the genera Acrolepia and Acrolepiopsis, and ultimately placed within Glyphipterigidae. The geographical distribution of A. clarkei is expanded to the Southern Atlantic forest (Rio Grande do Sul and Paraná states, Brazil).
ABSTRACT
ABSTRACT Chalepus dorni larvae were observed in commercial maize crops in the central region of the state of Minas Gerais, Brazil, during 20062007, 2008-2009 and 2010-2011 harvests. Early symptom of attack was characterized first by mines in the lower leaves of maize plants and later by the formation of necrotic areas. Although, there are reports of genus Chalepus in maize, this is the first record on the presence of C. dorni in maize in Minas Gerais, Brazil.
RESUMEN Se observaron larvas de Chalepus dorni en los cultivos comerciales de maíz en la región central de Minas Gerais durante los ciclos agrícolas 2006-2007, 2008-2009 y 2010-2011. El síntoma inicial se caracterizó por la presencia de minas en las hojas inferiores de plantas de maíz y la formación de áreas necróticas. Aunque existen informes de la presencia del género Chalepus en maíz, este es el primer registro de C. dorni en maíz en Minas Gerais, Brasil.