The hoverfly genus Merodon Meigen, 1803 (Diptera, Syrphidae), which comprises more than 200 species is distributed in the Palaearctic and Afrotropical Region, but one species, Merodon equestris, is a pest of flower bulbs and has been invasive into New Zealand and North America. In this work, the Merodon aurifer species group, a member of the M. avidus-nigritarsis lineage, is revised. The diagnostic characters of the M. aurifer species group, and the morphological differences between M. aurifer Loew, 1862 and M. nudicorpus sp. n. are explained and illustrated, as well as their distribution map. A detailed study of the type material resulted in three new synonyms: M. distinctus Palma, 1863 is a junior synonym of M. aurifer; M. manicatus (Sack, 1938) and M. testacoides Hurkmans, 1993 are junior synonyms of M. testaceus.

Lectotypes are designated for two taxa M. aurifer and M. manicatus instead of the erroneously designated types for these species in Hurkmans (1993).

食蚜蝇属Merodon Meigen, 1803 (Diptera, Syrphidae)，包括 200 多种，分布于古北区和亚热带地区，但其中一个物种Merodon equestris是一种球茎害虫，已入侵新西兰和北美国。在这项工作中，Merodon aurifer物种组（M. avidus-nigritarsis谱系的成员）进行了修订。M. aurifer种群的诊断特征，以及M. aurifer Loew, 1862 与M. nudicorpus的形态差异sp. n. 解释和说明，以及它们的分布图。对该类型材料的详细研究产生了三个新的同义词：M. distinctus Palma, 1863 是M. aurifer的初级同义词；M. manicatus (Sack, 1938) 和M. testacoides Hurkmans, 1993 是M. testaceus 的初级同义词。

选型被指定为两个分类群M. aurifer和M. manicatus，而不是在 Hurkmans (1993) 中错误地指定这些物种的类型。