Occurrence of fruit flies (Diptera: Tephritidae) in the municipality of Alvorada do Gurguéia in South Central Piauí, Brazil

The state of Piauí is in a Cerrado/Caatinga transition area, which is known the richness of its fauna and flora. Therefore, this work aims to know the diversity of fruit fly species in cashew orchards and native forest fragments in the south-central region of Piauí. Fruit flies were collected in McPhail traps and by sampling fruits. The material collected from the traps and the fruits in the two areas were taken to the Laboratory of Phytotechnics from Campus Prof. Cinobelina Elvas at the Universidade Federal do Piauí (UFPI/CPCE), municipality of Bom Jesus, Piauí, Brazil. In McPhail traps, six species of the genus Anastrepha: A. alveata, A. dissimilis, A. fraterculus, A. manihoti, A. obliqua, and A. zenildae were captured, of which A. fraterculus, A. obliqua, and A. zenildae were present in both areas. Anastrepha alveata, A. dissimilis and A. manihoti occurred only in the cashew orchard. In fruit sampling, A. fraterculus, A. obliqua, and A. zenildae infested wild-guava fruits, Myrcia tomentosa (Myrtaceae), in native forest. Anastrepha fraterculus, A. obliqua and A. zenildae were obtained directly from M. tomentosa fruits and from traps. The availability of host fruits is the factor that most influences the population fluctuation of fruit flies, mainly in the native forest area. Anastrepha manihoti is reported for the first time in the state of Piauí. This is the first record of A. fraterculus, A. obliqua and A. zenildae, infesting wildguava fruits, M. tomentosa.

Fruit flies of the genus Anastrepha (Diptera: Tephritidae) from some localities of Paraguay: new records, checklist, and illustrated key.

This study deals with fruit flies of the genus Anastrepha Schiner (Diptera: Tephritidae) collected in McPhail traps in the municipalities of Concepción, Belén, Horqueta, Loreto (state of Concepción) and Santa Rosa (state of Misiones), Paraguay. In total, 17 species were captured, 9 of which are new records for Paraguay. All morphological characters used for species identification are illustrated.

Diversidade de moscas frugívoras (Diptera, Tephritoidea) em áreas de matas decídua e ciliar no Pantanal sul-mato-grossense, Brasil / Diversity of frugivorous flies (Diptera, Tephritoidea) in areas of decidual and riparian forests in South Pantanal, Brazil

O conhecimento da diversidade de espécies de moscas nos ecossistemas é importante para subsidiar na escolha de métodos ecologicamente corretos para o controle de tefritóideos (Tephritidae e Lonchaeidae) pragas. O objetivo deste trabalho foi avaliar a diversidade de tefritóideos e seus padrões populacionais em áreas de matas decídua e ciliar. As moscas foram capturadas em armadilhas McPhail com atrativo alimentar em duas reservas florestais do município de Corumbá-MS, de agosto de 2003 a agosto de 2004. Treze espécies pertencentes a cinco gêneros e duas famílias foram registradas. No Sítio Pingo de Amor (mata decídua [MD]), foram coletadas: Anastrepha dissimilis, A. fraterculus, A. obliqua, A. rheediae, A. sororcula, A. undosa e Ceratitis capitata (Tephritidae) e de Lonchaeidae foram capturadas: Dasiops sp.1, Dasiops sp.2, Lonchaea sp.1, Lonchaea sp.2, Neosilba sp.1 e Neosilba sp.2. No Canal do Tamengo (mata ciliar [MC]), foram obtidas todas as espécies mencionadas acima, exceto: A. dissimilis, A. rheediae, A. undosa, Dasiops sp.2 and Neosilba sp.2. O índice de diversidade de Shannon-Weaver (H'), foi: 2,01 na MD e 1,51 na MC. Anastrepha obliqua foi caracterizada como muito abundante em ambas as reservas florestais. Na mata decídua A. sororcula foi constante e predominante e, Neosilba sp.1, muito abundante. Em ambos os ambientes A. obliqua, Lonchaea sp.2 e Neosilba sp.1 foram muito freqüentes e, A. obliqua e Neosilba sp.1 foram dominantes.

The knowledge of fly species diversity and population patterns in the ecosystems is important to subsidy the choice of ecologically correct methods for control of tephritoid pests. The aim of this paper is to evaluate the diversity of tephritoids and their population patterns in a decidual and a riparian forest. Flies were caught in McPhail traps with food bait in two natural forest reserves at the Municipality of Corumbá-MS, from August 2003 to August 2004. Thirteen species belonging to five genera and two families were recorded. At Sítio Pingo de Amor (decidual forest [DF]), were collected: Anastrepha dissimilis, A. fraterculus, A. obliqua, A. rheediae, A. sororcula, A. undosa and Ceratitis capitata (Tephritidae), besides Dasiops sp.1, Dasiops sp.2, Lonchaea sp.1, Lonchaea sp.2, Neosilba sp.1 and Neosilba sp.2., from Lonchaeidae. At Canal do Tamengo (riparian forest [RF]), were recorded all species above mentioned, except: A. dissimilis, A. rheediae, A. undosa, Dasiops sp.2 and Neosilba sp.2. The Shannon-Weaver diversity index (H'), was 2.01 in the DF and 1.51 in the RF. Anastrepha obliqua was very abundant in both natural forest reserves. In the DF A. sororcula was constant and predominant and, Neosilba sp.1 was very abundant. At both environments A. obliqua, Lonchaea sp.2 and Neosilba sp.1 were very frequent and, A. obliqua and Neosilba sp.1 were dominant.