Flutuação populacional de Willistoniella Mik e Ropalomera Wiedemann (Diptera: Ropalomeridae) na Amazônia Central

Abstract

-The populational fluctuation of flies of the genera Willistoniella Mik and Ropalomera Wiedemann (Diptera: Ropalomeridae) was studied using McPhail traps, with molasses (10%) as attractive bait, in two places in a mixed orchard of the families Myrtaceae, Sapotaceae, Anacardiaceae, Apocinaceae and Gutiferae, during 13 months (december of 1996 to december of 1997) in the Central Amazonia, Brazil. The total of 1,148 Willistoniella flies and 99 Ropalomera flies were captured. The abundance observed in the genera was larger during the dry months, however there was no correlation between flies caught in the traps and the rainfall in the two places.

Saprophytic flies in impacted areas of the Belo Monte Dam, Pará, Brazil (Diptera: Mesembrinellidae, Neriidae, Ropalomeridae, and Sarcophagidae): community composition, abundance, and species richness

“…This species has a wide geographical distribution, ranging from Mexico to Argentina . In a study on the population variation of Ropalomeridae in Manaus, two genera, Ropalomera Wiedemann, 1824 and Willistoniella, were collected, and 92% of the specimens belonged to the genus Willistoniella (Marques et al 2004), suggesting that species of this genus, especially W. pleuropunctata, may be the most abundant Ropalomeridae in several parts of the Amazon, a fact that may be related to the generalist habit of the species (Marques et al 2004).…”

“…In the study by Marques et al (2004), all four species of Willistoniella were reported, but the abundance of each was not mentioned.…”