Chinese Cretaceous larva exposes a southern Californian living fossil (Insecta, Coleoptera, Eucnemidae)
Chinese Cretaceous larva exposes a southern Californian living fossil (Insecta, Coleoptera, Eucnemidae)
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中国白垩纪幼虫暴露出南加州活化石（昆虫纲、鞘翅目、Eucnemidae）
DOI：
10.1111/cla.12124
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发表时间：
2016-04-01
期刊：
影响因子：
3.6
通讯作者：
Jia Songhai
中科院分区：
文献类型：
--
作者：
Chang Huali;Muona, Jyrki;Jia Songhai
记述了采自辽宁省黄板鸡沟义县组的一新种--中华古象Palaeoxenus sinensis Chang，Muona & Teravainen sp. nov.。这个分支中唯一已知的成员是南加州特有的杜氏优雅欧杉甲虫（Palaeoxenus dohrni），一种在针叶树中发展的物种，特别是香雪松（Calocedrus decurrens）。这一新的发现证明，高度特化的主要eucnemid谱系已经进化了123 Mya，在被子植物的主要辐射之前，可能是为了适应裸子植物的发展。
Palaeoxenus sinensis Chang, Muona & Teravainen sp. nov. (Coleoptera, Eucnemidae) is described on the basis of a Cretaceous larva found from the Yixian Formation in Huangbanjigou, Liaoning Province, China. The only previously known member of this clade is a southern Californian endemic, Dohrn's elegant eucnemid beetle (Palaeoxenus dohrni), a species that develops in conifers, especially the incense cedar (Calocedrus decurrens). The new find proves that the highly specialized main eucnemid lineages had evolved 123Mya, before the main radiation of the angiosperms and probably as an adaptation to development in gymnosperms.