Miranda Gil Felipe GonÇalves, Skevington Jeffrey H, Marshall Stephen A
Canadian National Collection of Insects, Arachnids and Nematodes - Agriculture and Agri-Food Canada. Ottawa, Ontario, Canada..
Zootaxa. 2020 Aug 5;4822(2):zootaxa.4822.2.1. doi: 10.11646/zootaxa.4822.2.1.
The large syrphid genus Ocyptamus Macquart has been subject to scrutiny in recent years, resulting in a more narrowly defined monophyletic Ocyptamus sensu stricto. Some of the species excluded from this narrower concept of the genus are in evolutionary lineages for which generic names are available, but other species are in lineages for which generic names do not exist. The current paper presents five new genera to correct this: Fragosa gen. nov. (former Ocyptamus stenogaster group), Hypocritanus gen. nov. (former Ocyptamus fascipennis group), Maiana gen. nov. (former Ocyptamus callidus group), Nuntianus gen. nov. (former Ocyptamus lepidus group) and Victoriana gen. nov. (former Ocyptamus melanorrhinus group). In addition to the new combinations related to these new genera, Argentinomyia aenea (Williston) comb. nov., Hybobathus pola (Curran) comb. nov., H. subchalybeus (Walker) comb. nov., H. wilhelmina (Doesburg) comb. nov., and Leucopodella nasuta (Williston) comb. nov. are moved out of Ocyptamus. Ocyptamus isthmus Thompson is a jun. syn. of Callostigma panamensis Curran stat. rev. Relevant morphological characters and their taxonomic and evolutionary implications are discussed.
大食蚜蝇属Ocyptamus Macquart近年来受到了详细审查，从而形成了一个定义更狭义的单系狭义Ocyptamus。从该属这一狭义概念中排除的一些物种属于有可用属名的进化谱系，但其他物种则属于没有属名的谱系。本文提出了五个新属来纠正这种情况：新属Fragosa（原Ocyptamus stenogaster组）、新属Hypocritanus（原Ocyptamus fascipennis组）、新属Maiana（原Ocyptamus callidus组）、新属Nuntianus（原Ocyptamus lepidus组）和新属Victoriana（原Ocyptamus melanorrhinus组）。除了与这些新属相关的新组合外，铜色阿根廷食蚜蝇Argentinomyia aenea (Williston)新组合、波拉氏希波食蚜蝇Hyboathus pola (Curran)新组合、亚铜色希波食蚜蝇H. subchalybeus (Walker)新组合、威廉氏希波食蚜蝇H. wilhelmina (Doesburg)新组合以及鼻状白足食蚜蝇Leucopodella nasuta (Williston)新组合被移出Ocyptamus属。汤普森氏Ocyptamus isthmus是巴拿马Callostigma panamensis Curran的新异名，相关形态特征及其分类学和进化意义也进行了讨论。
