Laboratório de Entomologia Sistemática, Departamento de Zoologia, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, 91501-970 Porto Alegre, RS, Brazil.
Zootaxa. 2021 Apr 14;4958(1):zootaxa.4958.1.36. doi: 10.11646/zootaxa.4958.1.36.
The Ochlerini (Discocephalinae) are endemic in the Neotropical region, and the tribe currently contains 38 genera and 149 species. The monotypic Macropygium Spinola, 1837 is the most widespread ochlerine genus in the Americas, ranging from Mexico to Argentina. Macropygium reticulare (Fabricius, 1803) is one of the few Ochlerini of phytosanitary importance, transmitting Phytomonas spp. in palm crops in South America. Nonetheless its wide distribution, and phytosanitary importance, the taxonomy of Macropygium has been neglected. Here we present a revision of Macropygium, revalidate three species, Macropygium spinolae Stål, 1860, REVISED STATUS (removed from the synonymy with M. reticulare), Macropygium bifidum (Westwood, 1837), NEW COMBINATION (removed from the synonymy with M. reticulare), and Macropygium subsulcatum (Amyot Serville, 1843), REVISED STATUS (removed from the synonymy with M. reticulare). We remove Ochlerus guttipes Walker, 1867 from the synonymy with M. reticulare, and propose O. guttipes a new junior synonym of M. spinolae. Finally, we describe one new species, Macropygium graziae Silva Campos, Sp. Nov.. A key for the species of Macropygium is provided.
Ochleri （Discocephalinae）是新热带地区特有的，该部落目前包含 38 个属和 149 个种。单种属 Macropygium Spinola，1837 是美洲分布最广的 Ochleri 属，分布范围从墨西哥到阿根廷。Macropygium reticulare（Fabricius，1803）是少数具有植物检疫重要性的 Ochleri 之一，在南美洲棕榈作物中传播 Phytomonas spp。尽管分布广泛，具有植物检疫重要性，但 Macropygium 的分类学一直被忽视。在这里，我们对 Macropygium 进行了修订，重新确认了三个种，Macropygium spinolae Stål，1860，REVISED STATUS（从与 M. reticulare 的同义名中删除），Macropygium bifidum（Westwood，1837），NEW COMBINATION（从与 M. reticulare 的同义名中删除）和 Macropygium subsulcatum（Amyot Serville，1843），REVISED STATUS（从与 M. reticulare 的同义名中删除）。我们将 Ochlerus guttipes Walker，1867 从与 M. reticulare 的同义名中删除，并提出将 O. guttipes 作为 M. spinolae 的新同物异名。最后，我们描述了一个新种，Macropygium graziae Silva Campos，Sp. Nov.。提供了 Macropygium 种的关键特征。
