Two fossil representatives of the extant genus Ankothrips are described from French amber, namely, the Late Cretaceous Ankothrips dupeae sp. nov., from Vendean amber, and the earliest Eocene Ankothrips deploegi sp. nov., from Oise amber. We discuss the differences between the middle Eocene Baltic amber genus Archankothrips and Ankothrips, concluding that the two genera are extremely similar with only one significant difference in male specimens. The disjunctive distribution of the extant species along with the presence of one Late Cretaceous species strongly suggest an Early Cretaceous origin for Ankothrips. The genus is therefore very ancient and has had a remarkable morphological stability for the last 94 million years. This situation is unique among the Cretaceous thrips, and rare among insects (only c. 3% of the genera in the well‐documented mid‐Cretaceous Burmese amber are still extant). We propose some hypotheses that could explain the stability of Ankothrips through time.

中文翻译：

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Ankothrips，现存最古老的蓟马属（Thysanoptera，Melanthripidae）

现存的Ankothrips属的两个化石代表来自法国的琥珀，即白垩纪晚期的Ankothrips dupeae sp。11月，来自Vendean琥珀，以及最早的始新世Ankothrips deploegi sp.。11月，来自瓦兹琥珀。我们讨论了中新世波罗的海琥珀属Archankothrips和Ankothrips之间的差异，认为这两个属极为相似，而雄性标本中只有一个显着差异。现存物种的分离分布以及一种晚白垩世物种的存在强烈表明，早古白垩纪起源于Ankothrips。因此，该属非常古老，并且在过去的9400万年中具有显着的形态稳定性。这种情况是白垩纪蓟马中是独一无二的，和罕见的昆虫中（仅ç 3％，在证据充分的白垩纪中期缅甸琥珀仍现存的属）。我们提出了一些可以解释Ankothrips随时间变化的稳定性的假设。