Background In Havelange (Belgium), two farms are experiencing an ecological transition. We aimed to evaluate the impact of their agricultural activities on insect pollinator communities. This article depicts the situation at the very early stage of the farm transition. This study supports the fact that the maintenance of farm-level natural habitats provides environmental benefits, such as the conservation of two important pollinator communities: wild bees and hoverflies. New information Over two years (2018-2019), by using nets and coloured pan-traps, we collected 6301 bee and hoverfly specimens amongst contrasting habitats within two farmsteads undergoing ecological transition in Havelange (Belgium). We reported 101 bee species and morphospecies from 15 genera within six families and 31 hoverfly species and morphospecies from 18 genera. This list reinforces the national pollinator database by providing new distribution data for extinction-threatened species, such as Andrena schencki Morawitz 1866, Bombus campestris (Panzer 1801), Eucera longicornis (L.) and Halictus maculatus Smith 1848 or for data deficient species, such as A. semilaevis Pérez 1903, A. fulvata (Müller 1766), A. trimmerana (Kirby 1802) and Hylaeus brevicornis Nylander 1852.

中文翻译：

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野生蜜蜂（膜翅目：Anthophila）和食蚜蝇（Diptera：Syrphidae）群落在生态转型农场内的分布

背景 在 Havelange（比利时），两个农场正在经历生态转型。我们旨在评估他们的农业活动对昆虫传粉者群落的影响。本文描述了农场转型初期的情况。这项研究支持这样一个事实，即维护农场级自然栖息地可以带来环境效益，例如保护两个重要的传粉媒介群落：野生蜜蜂和食蚜蝇。新信息 两年来（2018-2019 年），通过使用网和彩色捕集器，我们在 Havelange（比利时）的两个正在经历生态转型的农庄内的对比栖息地中收集了 6301 个蜜蜂和食蚜蝇标本。我们报告了来自 6 个科 15 属的 101 种蜜蜂和形态种，以及来自 18 属的 31 种飞蝇种和形态种。