Choice of perching sites by East Asian robber flies (Diptera: Asilidae)
2002
Joachim HAUPT
Field observations in different habitats on the island of Iriomote (Yaeyama, Ryukyu, Japan) were carried out concerning their importance as perching sites of robber flies (Diptera, Asilidae), including the specialization of different species to varying microhabitats. Factors of mutual exclusion for the different species include spatial (horizontal and vertical), seasonal and behavioural factors. Some geographically widespread species prefer open areas, commonly used for agriculture, but endemic species are localized in the tropical forests of the lowlands, and afford that area the need for special protection.
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