The giant cicada Quesada gigas (Olivier, 1790) (Hemiptera: Cicadidae) is a major pest of coffee plants in Brazil. To ensure the rational management and ecological equilibrium, information about the behavior, dispersion, and reproduction of giant cicada is fundamental. The present work was conducted in an area of 97 ha planted with Coffea arabica L. to investigate adult dispersion as well as mating and oviposition behaviors of Q. gigas. A sound trap was placed at a 'release point' used for the attraction, marking, and release of adults in the area. The recapture of insects was performed with the same sound trap positioned at 20 points distributed at 100, 250, 400, and 1,000 m from the release point. The highest recapture rates of Q. gigas were observed at 100 m from the release point, and the lowest recapture rates were observed at 1,000 m. The presence of Eucalyptus plants in the area apparently influenced dispersion, as high recapture rates were observed at the sites close to Eucalyptus plants. One copulation of Q. gigas lasted 41.6 ± 0.43 min, and the period of a single oviposition bout was 30.0 ± 0.20 min. Quesada gigas adult longevity in the field was estimated to be 49 d. Both males and females were observed performing multiple matings.

中文翻译：

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巴西咖啡种植园巨蝉（半翅目：蝉科）的分布规律

巨蝉 Quesada gigas (Olivier, 1790)（半翅目：蝉科）是巴西咖啡植物的主要害虫。为了确保合理管理和生态平衡，巨蝉的行为、分布和繁殖信息是至关重要的。目前的工作是在种植了小粒咖啡的 97 公顷区域内进行，以调查 Q. gigas 的成虫分散以及交配和产卵行为。一个声音陷阱被放置在一个“释放点”，用于吸引、标记和释放该地区的成年人。昆虫的重新捕获是在距离释放点 100、250、400 和 1000 m 处分布的 20 个点处使用相同的声音陷阱进行的。在离释放点 100 m 处观察到 Q. gigas 的最高再捕获率，在 1,000 m 处观察到最低的再捕获率。该地区桉树植物的存在显然影响了扩散，因为在靠近桉树植物的地点观察到高回收率。Q. gigas 的一次交配持续了 41.6 ± 0.43 分钟，单次产卵周期为 30.0 ± 0.20 分钟。Quesada gigas 成虫在田间的寿命估计为 49 d。观察到雄性和雌性都进行多次交配。