Robber flies (Asilidae) are the main predatory fly family feeding on beetles, butterflies, other flies for true flies, and even spiders; however, Hymenoptera is the most common prey. Invasive Hymenoptera species are common in central and southern Chile; however, few predators of these are known. The hunting behavior and prey of Chilean robber fly species are also poorly known. The aim of this study is to provide the first hunting behavior records of five Chilean giant robber fly species on invasive Hymenoptera. In addition, an updated distribution of these species is provided. Records of hunting behavior were based on fieldwork collections and citizen science observations. The historical distribution was compared with citizen science observations using chi-square analyzes. Twelve predation events were recorded. Obelophorus terebratus was the most common predator. Bombus terrestris was the invasive Hymenoptera most preyed upon. Both the extension of occurrence of Lycomya germainii as Obelophorus species showed changes in his distribution. Only O. landbecki shown changes in area of occupancy. Citizen science is playing a key role in the knowledge of biological interactions and distribution of endemic and native Chilean robber fly species.

强盗蝇（A科）是主要的掠食性蝇科，以甲虫，蝴蝶，其他真蝇甚至蜘蛛为食。然而，膜翅目是最常见的猎物。入侵的膜翅目物种在智利中部和南部很常见；然而，鲜为人知的掠食者。智利强盗蝇类的狩猎行为和猎物也鲜为人知。这项研究的目的是提供入侵性膜翅目上的五个智利巨型强盗蝇种的首次狩猎行为记录。另外，提供了这些物种的最新分布。狩猎行为的记录是根据田野调查和公民科学观察得出的。使用卡方分析将历史分布与公民科学观察结果进行比较。记录了十二次掠食事件。土龟Obelophorus是最常见的捕食者。熊蜂（Bombus terrestris）是侵袭性的膜翅目昆虫。germainii的Lycomya germainii作为Obelophorus物种的出现都显示出其分布的变化。只有O. landbecki展示了居住面积的变化。公民科学在了解当地特有和当地智利强盗蝇类的生物相互作用和分布方面起着关键作用。