Shavrin Alexey V, Yamamoto Shûhei
Institute of Life Sciences and Technologies, Daugavpils University, Vienibas 13, Daugavpils, LV-5401, Latvia Daugavpils University Daugavpils Latvia.
The Hokkaido University Museum, Kita 8, Nishi 5, Kita-ku, Sapporo 060-0808, Japan Hokkaido University Museum Kita Japan.
Zookeys. 2020 Oct 5;973:89-101. doi: 10.3897/zookeys.973.53940. eCollection 2020.
An unusual new omaliine species, , is described and illustrated from Eocene Baltic amber, tentatively placed in the megadiverse genus 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 is provided.
描述并展示了一个来自始新世波罗的海琥珀的不寻常的新奥马利属物种，暂置于种类繁多的1819年利奇所命名的属中。建立了一个新的单型物种组。该新物种可通过较大的体型、近长方形前胸背板的形状、前胸腹板上的中隆线以及每个中胫节内侧的大的三角形齿，轻松与该属的其他物种区分开来，雄性可能呈现出一种特殊的两性异形。在显微断层图像的支持下，基于对该标本的研究，对这个新物种与已描述的该属现存物种进行了简要的比较分析。
