Foraging insects of Allium cepa L. (Liliaceae) have been studied during two flowering periods in 2016 and 2017, in the region of Tizi Ouzou (northeastern Algeria). At first, our observations showed that the majority of forager insects, which led and gave preference for their foraging activity of this plant, is Hymenoptera Apoidea. However, we noted also that the Apidae, Apis mellifera and the Halictidae, Lasioglossum malachurum, and L. pauxillum are the most frequent visitors on onion flowers. We highlighted all these species perform positive foraging regardless of the product harvested. Moreover, as for food research, our study described a specific behavior of honey bee, which devotes its visits to the exclusive harvesting of nectar whereas the visits of two other species are much more devoted to the mixed collection. According to other studies about Allium cepa L. (Liliaceae), we confirm the presence of pollinating insects greatly contributes to the improvement of production; indeed the grain yield obtained by cross-pollination is higher than obtained by autogamy. We gathered data showing the average weight of seeds obtained per free quadrates is 4.14 g and that of caged quadrates is 0.09 g.

在 2016 年和 2017 年的两个开花期，在 Tizi Ouzou（阿尔及利亚东北部）地区对Allium cepa L.（百合科）的觅食昆虫进行了研究。首先，我们的观察表明，引导并优先选择这种植物进行觅食活动的大多数觅食昆虫是膜翅目昆虫。然而，我们还注意到蜜蜂科、Apis mellifera和 Halictidae、Lasioglossum malachurum和L. pauxillum是洋葱花上最常光顾的人。我们强调，无论收获的产品如何，所有这些物种都会进行积极的觅食。此外，就食物研究而言，我们的研究描述了蜜蜂的一种特定行为，它的访问专门用于采集花蜜，而其他两个物种的访问则更致力于混合采集。根据有关百合科葱的其他研究，我们证实传粉昆虫的存在极大地促进了产量的提高；事实上，通过异花授粉获得的谷物产量高于通过自花授粉获得的谷物产量。我们收集的数据显示，每个自由方格获得的种子平均重量为 4.14 克，笼养方格的种子平均重量为 0.09 克。