中国科学院南京地质古生物研究所机构知识库

Fossil evidence of the ant-like stone beetle tribe Scydmaenini is extremely rare. To date, only one genus and species, dagger Kuafu borealis Yin, Cai & Huang, has been reported from mid-Cretaceous Burmese amber, which was treated as a stem group of the tribe. Here we describe the second fossil species, dagger Scydmaenus minor Yin & Cai, sp. nov., also from Burmese amber. The new species possesses a majority of characters typical of the extant genus Scydmaenus Latreille, 1802, and may be characterized by the minute body size, a relatively large pronotum, the probably plesiomorphic short metatrochanters, and a combination of other morphological characters. Due to the current inadequate infrageneric classification of Scydmaenus, we place the new species as incertae sedis within the genus. (C) 2019 Elsevier Ltd. All rights reserved.