Thysanoptera, commonly known as thrips, are diverse tiny insects whose earliest fossil record dates back to the Triassic period. Since there are few studies on the divergence time of taxa under Thysanoptera, this study used 13 mitochondrial coding protein genes to reconstruct the phylogenetic tree with divergence time of 26 species of this order and show a reliable phylogenetic relationship of thrips species. The time tree of this study shows that most extant thrips diverged in the early Tertiary period, while the fossil records also support that most extinct thrips appeared in this period. This study expands our understanding of the evolution of thrips and provides a feasible way of using multiple mitochondrial genes to establish robust phylogenetic relationships and explore divergence time between species.

中文翻译：

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现存蓟马在第三纪早期分化

缨翅目，俗称蓟马，是多种微小昆虫，其最早的化石记录可以追溯到三叠纪时期。由于对缨翅目类群的分化时间研究较少，本研究利用13个线粒体编码蛋白基因，重建了该目26个物种的分化时间系统发育树，展示了蓟马物种可靠的系统发育关系。这项研究的时间树显示，大多数现存的蓟马在第三纪早期出现了分化，而化石记录也支持大多数灭绝的蓟马出现在这一时期。这项研究扩展了我们对蓟马进化的理解，并提供了一种利用多个线粒体基因建立稳健的系统发育关系并探索物种之间分化时间的可行方法。