Hoverflies (Syrphidae) represent an insect group of great importance in ecosystems and indicators of ecosystem change. The genus Merodon Meigen, 1803 (tribe Merodontini) is one of the most species-rich hoverfly genera, distributed across the Palaearctic and Afrotropical regions. The genus Merodon Meigen, 1803 is less diverse in the Afrotropical Region than in the Palaearctic (11 versus 160 known species). An ongoing study of the genus Merodon in Africa has revealed the existence of two new species into the taxon previously known as Merodon planifacies Bezzi, 1915. The M. planifacies subgroup belongs to the Afrotropical lineage of the Merodon desuturinus group. Morphological analysis of male genitalia has classified the available specimens of the M. planifacies taxon into two sets: the first one corresponds to M. planifacies with folded theca, while the other with smooth theca, later named Merodon capi complex was found exclusively at the Drakensberg mountains in the Republic of South Africa, specifically in the Cathedral Peak National Park and the Royal Natal National Park. Further, molecular and morphometric evidences revealed two cryptic taxa within this complex: M. capi sp. nov. Vujić et Radenković and Merodon roni sp. nov. Radenković et Vujić.

蚜蝇（Syrphidae）代表着在生态系统中非常重要的昆虫群和生态系统变化的指标。Merodon Meigen属1803年（梅洛多尼尼部落）是物种最丰富的Hoverfly属之一，分布在古北非和非热带地区。Merodon Meigen属（Merodon Meigen，1803）在非热带地区的多样性要比古北纪（11对160个已知物种）少。正在进行的对非洲龙牙藻属的研究表明，该分类单元中存在两个新物种，以前称为Merodon Planifacies Bezzi，1915年。M. Planifacies子群属于Merodon desuturinus的非裔系组。男性生殖器的形态学分析已将可用的平生分枝杆菌标本分为两套：第一个对应于带有折叠的卵泡膜的扁平分枝杆菌，而另一组则具有光滑卵泡膜，后来被称为Merodon capi复合体，仅在德拉肯斯堡发现南非共和国的山脉，特别是大教堂峰国家公园和皇家纳塔尔国家公园。此外，分子和形态计量学证据揭示了该复合物中的两个隐性分类群：M. capi sp.。十一月 VujićetRadenković和Merodon roni sp。十一月 RadenkovićetVujić。