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A remarkable new species of the rove beetle genus Anthobium Leach, 1819 from Eocene Baltic amber (Coleoptera, Staphylinidae, Omaliinae)
ZooKeys ( IF 1.3 ) Pub Date : 2020-10-05 , DOI: 10.3897/zookeys.973.53940
Alexey V Shavrin 1 , Shûhei Yamamoto 2
Affiliation  

An unusual new omaliine species, Anthobium alekseevisp. nov., is described and illustrated from Eocene Baltic amber, tentatively placed in the megadiverse genus Anthobium Leach, 1819. A new monotypic species-group is established. The new species can easily be distinguished from other species of the genus by the larger body, shape of the subrectangular pronotum, and the presence of a median carina on the prosternum and large, subtriangular tooth on the inner side of each mesotibia, likely exhibiting a peculiar sexual dimorphism in the male. Based on the study of the specimen with support of microtomographic images, a brief comparative analysis of a new species with described extant species of Anthobium is provided.

中文翻译:

甲虫属 Anthobium Leach 的一个显着新种,1819 年来自始新世波罗的海琥珀(鞘翅目、Staphylinidae、Omaliinae)

一种不寻常的新 omaliine 物种,Anthobium alekseevisp。11 月,是从始新世波罗的海琥珀中描述和说明的,1819 年暂时将其归入巨型多样性 Anthobium Leach 属。建立了一个新的单型物种组。这个新物种可以很容易地与该属的其他物种区分开来,因为它有较大的身体、近矩形的前胸背板形状,以及前胸骨上有一个正中隆突,每个中胫内侧有一个大的、近三角形的牙齿,可能表现出男性特有的性别二态性。基于在显微断层扫描图像的支持下对标本的研究,提供了一个新物种与所描述的现有 Anthobium 物种的简要比较分析。
更新日期:2020-10-05
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