The first Mesozoic Jacobson's beetle (Coleoptera: Jacobsoniidae) in Cretaceous Burmese amber and biogeographical stasis
The first Mesozoic Jacobson's beetle (Coleoptera: Jacobsoniidae) in Cretaceous Burmese amber and biogeographical stasis
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白垩纪缅甸琥珀中第一个中生代雅各布森甲虫（鞘翅目：雅各布森甲虫科）与生物地理停滞
DOI：
10.1080/14772019.2017.1314388
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发表时间：
2018-01-01
影响因子：
2.6
通讯作者：
Huang, Diying
中科院分区：
文献类型：
--
作者：
Cai, Chenyang;Slipinski, Adam;Huang, Diying
雅各布森化石很少被发现。这里描述并描绘了神秘的多食动物科 Jacobsoniidae 的最早代表。属于现存Sarothrias Grouvelle属的一个新种，匕首Sarothrias cretaceus sp。 11月，保存在来自缅甸的上白垩纪琥珀中，代表了中生代的第一个雅各布氏化石。 Sarothrias cretaceus 与来自印度尼西亚东部塔宁巴尔群岛的近代物种 S. audax lipiski & Lobl 最为相似，不同之处在于存在带有鳞状刚毛的鞘翅肋，但它似乎保留了一些祖先特征，包括三节棒状体、无刚毛且凹状的腹部腹膜 1 以及发达的后腹膜辨别。这项新发现表明了Sarothrias属和Jacobsoniidae科的古老性，表明该科可能起源于冈瓦纳超大陆分裂之前，这与冠群Staphylinoidea（包括Jacobsoniidae）出现于约1.93亿年前的假设相一致。现代和化石 Sarothrias 的区域分布表明生物地理停滞，因此扩散仅限于茎组的起源区域。http://zoobank.org/urn:lsid:zoobank.org:pub:93C41362-D78B-4C26-9132-0D56030FB18C
Fossil jacobsoniids are rarely discovered. Here the earliest representative of the enigmatic polyphagan family Jacobsoniidae is described and figured. A new species belonging to the extant genus Sarothrias Grouvelle, dagger Sarothrias cretaceus sp. nov., is preserved in the Upper Cretaceous amber from Myanmar, representing the first fossil Jacobsoniidae from the Mesozoic. Sarothrias cretaceus is most similar to the Recent species S. audax lipiski & Lobl from the Tanimbar Islands of East Indonesia, differing from it by the presence of elytral costae bearing squamiform setae, but it appears to retain several ancestral features, including the three-segmented club, non-setose and afoveate abdominal ventrite 1, and well-developed discrimen on the metaventrite. The new discovery indicates antiquity of the genus Sarothrias and the family Jacobsoniidae, suggesting that the family probably originated before the breakup of the supercontinent Gondwana, consistent with the hypothesis that the crown-group Staphylinoidea (including Jacobsoniidae) appeared about 193 million years ago. The regional distribution of the modern and fossil Sarothrias is indicative of biogeographical stasis, whereby dispersal was limited from the region of origin of the stem group.http://zoobank.org/urn:lsid:zoobank.org:pub:93C41362-D78B-4C26-9132-0D56030FB18C