Chave de identificação ilustrada para os gêneros de Syrphinae (Diptera, Syrphidae) de ocorrência no sul do Brasil

Abstract

Despite of the richness and abundance of the Syrphidae in the Neotropical Region, the bibliography about the family for this area is relatively scarce. Identification of specimens belonging to this family and, more specifically for those of the subfamily Syrphinae, becomes difficult because of the great variation between the species of a single genus. With the purpose in assisting specialists and non-specialists in identifying the genera of Syrphidae a pictorial key for the subfamilies Eristalinae, Microdontinae and Syrphinae and for the Syrphinae genera occurring in the states of Rio Grande do Sul, Santa Catarina and Paraná, Southern Brazil was prepared. Species of eleven genera have been recorded for the region:

Floral resources used by insects in a grassland community in Southern Brazil

“…Insect specimens were identified by specialists with identification keys and compared with specimens placed in the entomological collections from Museu de Ciências e Tecnologia/Pontifícia Universidade Católica do Rio Grande do Sul (bees), Universidade Federal de Santa Maria (wasps and flies), Museu de Ciências Naturais/Fundação Zoobotânica do Rio Grande do Sul (beetles) and Universidade Federal do Rio Grande do Sul (butterflies). Bees, social wasps (Vespidae), flies (Syrphidae) and butterflies were classified following Silveira et al (2002), Carpenter & Marques (2001), Marinoni et al (2007) and Lamas (2004), respectively. Morpho-species of wasps and flies (other than social wasps and syrphids), and beetles were identified at family level using the keys of Triplehorn & Johnson (2005).…”

Toxomerus duplicatus Wiedemann, 1830 (Diptera: Syrphidae) preying on Microtheca spp. (Coleoptera: Chrysomelidae) larvae

“…T. duplicatus is recorded for southern Brazil in the states of Paraná and Santa Catarina (Marinoni et al, 2007).…”

“…There are over 150 species of Toxomerus of which nearly 143 are distributed in the Neotropical Region (Marinoni et al, 2007). T. duplicatus is recorded for southern Brazil in the states of Paraná and Santa Catarina (Marinoni et al, 2007).…”

“…larvae by T. duplicatus in Brazil is new and represents an important option for the forage turnip and also for other Brassicaceae crops, especially where M. ochroloma and M. semilaevis larvae occur. Syrphidae larvae are known as important natural enemies of aphids in different crops (Oliveira et al, 2003;Ghahari et al, 2008), including greenhouses (Pimentel, 2007), due to their capacity of consuming great amounts of insects during its developmental time (Marinoni et al, 2007). Furthermore, adults perform an important role as pollinators of different vegetable species (Morales and Köhler, 2008).…”

The Coffee Red Mealybug, Nipaecoccus coffeae (Hempel) (Hemiptera: Pseudococcidae), an uncommon mealybug attacking coffee plants in Brazil

“…This species belongs to the Nipaecoccus group in lacking oral-rim tubular ducts and the following characters based on the adult female are useful to separate this species from others of the same genus known from Brazil: (1) normally 7-segmented antenna Americas predominantly in the neotropical region with approximately 300 described species (Marinoni et al 2007). Species belonging to this genus or to the O. stenogaster group have been reported predating over aphids, psyllids and mites.…”