The first xiphydriid wood wasp in Cretaceous amber (Hymenoptera: Xiphydriidae) and a potential association with Cycadales

The first xiphydriid wood wasp in Cretaceous amber (Hymenoptera: Xiphydriidae) and a potential association with Cycadales
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白垩纪琥珀中第一个剑齿木蜂(膜翅目:剑齿科)以及与苏铁目的潜在关联

DOI:
10.5194/fr-24-445-2022
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发表时间:
2022-01
期刊:
影响因子:
1.4
通讯作者:
Gao Taiping
Gao Taiping
中科院分区:
地球科学3区
文献类型:
--
作者:
Gao Jia;Engel Michael S.;Grímsson Friðgeir;Gu Lei;Ren Dong;Gao Taiping

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本文描述了采自白垩纪中期克钦琥珀中的木蜂化石一新属新种,代表了木蜂科在化石记录中的首次出现。新种Paraxiphydria resinata gen. et sp. nov.具有典型的无形态,包括圆柱形的身体,细长的颈部和圆顶状的头部。尽管如此,由于其独特的性状组合,包括迄今为止在该科物种中未知的特征,该属被归类于一个单独的亚科,Paraxiphydriinae subfam。nov.提出剑水蚤科超属群检索表。新描述的物种是第一个化石xiphydriid木黄蜂,延长了Xiphydriidae的出现到白垩纪中期,并增加了已知的多样性的功能在家庭。最后,讨论了早期剑虫翅脉序的简化和寄主植物亲缘关系的假说。我们评估花粉与黄蜂,将其分配到属苏铁,并得出结论,隶属苏铁目是最有可能的。
A new genus and species of fossil wood wasp is described and figured from mid-Cretaceous Kachin amber, representing the first occurrence of the family Xiphydriidae in the fossil record. Paraxiphydria resinata gen. et sp. nov. exhibits typical apomorphies of the family including a generally cylindrical body, elongate neck and dome-shaped head. Nonetheless, owing to a unique combination of traits including features hitherto unknown among species of the family, the genus is classified within a separate subfamily, Paraxiphydriinae subfam. nov. A key is presented to the suprageneric groups of Xiphydriidae. The newly described species is the first fossil xiphydriid wood wasp, extends the occurrence of Xiphydriidae into the mid-Cretaceous and adds to the known diversity of features in the family. Lastly, the simplification of wing venation and hypotheses of host-plant affiliations of early xiphydriids are discussed. We evaluate pollen associated with the wasp, assign it to the genus Cycadopites and conclude that an affiliation to the Cycadales is most likely.
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