Diverse oxyporine rove beetles from the Early Cretaceous of China (Coleoptera: Staphylinidae)
Diverse oxyporine rove beetles from the Early Cretaceous of China (Coleoptera: Staphylinidae)
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中国早白垩世的多种氧化孢甲虫（鞘翅目：葡萄科）
DOI：
10.1111/syen.12069
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发表时间：
2014-07-01
影响因子：
4.8
通讯作者：
Huang, Di-Ying
中科院分区：
文献类型：
--
作者：
Cai, Chen-Yang;Huang, Di-Ying
两个新属和新种，Protoxyporus grandis gen。等 sp.n.和 Cretoxyporus extraneus gen。 et sp.n.，是根据中国下白垩统义县组两块保存完好的印痕化石进行描述和计算的。这两个属表现出诊断现存葡萄球菌亚科 Oxyporinae 的特征组合：大而突出的下颌骨、明显分离的中颈、腹部背突 III-VII 各有一对基底外侧脊，以及具有砖墙图案的腹部节间膜。 Protoxyporus 与现存的 Oxyporus 的不同之处在于保留了以下拟形特征：后颅骨之间细长的突间突（或纵向隆突）、间隔相对较窄的中突、欠发达的后腹前突和长的眶下脊。 Cretoxyporus 在形态上与 Oxyporus 非常相似，但保留了明显的细长眶下脊。两个新的氧化孔菌属的发现表明，早期的氧化孔菌素比以前记录的更加多样化，它们的进化历史也更加复杂。本发表的作品已在 ZooBank 注册，http://zoobank.org/urn:lsid:zoobank.org:pub:11503976-D577-45D2-ACCB-8226782EF817。
Two new genera and species, Protoxyporus grandis gen. et sp.n. and Cretoxyporus extraneus gen. et sp.n., are described and figured on the basis of two well-preserved impression fossils from the Lower Cretaceous Yixian Formation of China. The two genera display a combination of traits that are diagnostic of the extant staphylinid subfamily Oxyporinae: large and prominent mandibles, distinctly separated mesocoxae, abdominal tergites III-VII each with a pair of basolateral ridges, and abdominal intersegmental membranes with brick-wall' pattern. Protoxyporus differs from extant Oxyporus in retaining the following plesiomorphic features: an elongate intercoxal process (or longitudinal carina) between metacoxae, relatively narrowly separated mesocoxae, less developed metaventral anterior process, and long infraorbital ridges. Cretoxyporus is morphologically very similar to Oxyporus, but retains distinct elongate infraorbital ridges. The discovery of two new oxyporine genera suggests that the early oxyporines were more diverse and their evolutionary history more complicated than previously documented. This published work has been registered in ZooBank, http://zoobank.org/urn:lsid:zoobank.org:pub:11503976-D577-45D2-ACCB-8226782EF817.