Out of Africa? A dated molecular phylogeny of the cicada tribe Platypleurini Schmidt (Hemiptera: Cicadidae), with a focus on African genera and the genus Platypleura Amyot & Audinet‐Serville
Out of Africa? A dated molecular phylogeny of the cicada tribe Platypleurini Schmidt (Hemiptera: Cicadidae), with a focus on African genera and the genus Platypleura Amyot & Audinet‐Serville
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DOI：
10.1111/syen.12360
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发表时间：
2019-10
影响因子：
4.8
通讯作者：
B. Price;D. Marshall;N. Barker;C. Simon;M. Villet
中科院分区：
文献类型：
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作者：
B. Price;D. Marshall;N. Barker;C. Simon;M. Villet
扁尾蝉属（Platypleurini）是一个大型的有魅力的蝉群，分布于南非的阿古尔哈斯角，经过热带非洲、马达加斯加、印度和东亚到日本，属的多样性集中在赤道和南部非洲。这种分布表明冈瓦纳起源的可能性，并从非洲或印度扩散到东亚。我们使用了四个基因（三个线粒体）的分子数据集，化石校准和分子钟信息，以探索platypleurine蝉的系统发育关系及其多样化的时间和地理。最早的分裂部落被发现分离森林属在马达加斯加和赤道非洲的主要辐射，和所有的亚洲/印度物种采样形成一个年轻的分支嵌套在非洲类群。该部落在新生代出现了多样化，从C。50-32 Ma，大多数现存的非洲血统起源于中新世或更晚，在冈瓦纳大陆分裂之后。生物地理学分析表明，该部落起源于非洲，亚洲扁胸龙是在一次单一的扩散事件中形成的，但由于树中的关键节点仍然缺乏有力的支持，因此需要额外的分类单元采样和遗传数据来确认这一模式。马达加斯加的两个Platypleurini属（Pycna阿莫特和Audinet‐Serville，Yanga Distant）被发现起源于中新世晚期来自非洲的单一谱系的传播。Platypleura属被恢复为多系，南非的Platypleura signifera步行者和许多亚洲/印度的物种显然需要分配到不同的属，并提出了一个新的Platypleura概念，Azanicada Villet syn. n. Orapa Distant属和Hamza Distant属，目前被列为独立的部落，但怀疑与Platypleurine有亲缘关系，它们深深地嵌套在Platypleurini辐射内。部落Orapini syn.n.在这里，Hamzini部落被synonymized，而ICZN正在等待一项决定，以保持命名的稳定性。
The Platypleurini is a large group of charismatic cicadas distributed from Cape Agulhas in South Africa, through tropical Africa, Madagascar, India and eastern Asia to Japan, with generic diversity concentrated in equatorial and southern Africa. This distribution suggests the possibility of a Gondwanan origin and dispersal to eastern Asia from Africa or India. We used a four‐gene (three mitochondrial) molecular dataset, fossil calibrations and molecular clock information to explore the phylogenetic relationships of the platypleurine cicadas and the timing and geography of their diversification. The earliest splits in the tribe were found to separate forest genera in Madagascar and equatorial Africa from the main radiation, and all of the Asian/Indian species sampled formed a younger clade nested well within the African taxa. The tribe appears to have diversified during the Cenozoic, beginning c. 50–32 Ma, with most extant African lineages originating in the Miocene or later, well after the breakup of the Gondwanan landmass. Biogeographical analysis suggests an African origin for the tribe and a single dispersal event founding the Asian platypleurines, although additional taxon sampling and genetic data will be needed to confirm this pattern because key nodes in the tree are still weakly supported. Two Platypleurini genera from Madagascar (Pycna Amyot & Audinet‐Serville, Yanga Distant) are found to have originated by late Miocene dispersal of a single lineage from Africa. The genus Platypleura is recovered as polyphyletic, with Platypleura signifera Walker from South Africa and many Asian/Indian species apparently requiring assignment to different genera, and a new Platypleura concept is proposed with the synonymization of Azanicada Villet syn.n. The genera Orapa Distant and Hamza Distant, currently listed within separate tribes but suspected of platypleurine affinity, are nested deeply within the Platypleurini radiation. The tribe Orapini syn.n. is here synonymized while the tribe Hamzini is pending a decision of the ICZN to preserve nomenclatorial stability.