A new scolebythid-like chrysidoid genus and species (Hymenoptera: Chrysidoidea) with striking metasomal structure from the mid-Cretaceous Kachin amber

IF 1.9 Q2 ENTOMOLOGY Palaeoentomology Pub Date : 2023-10-30 DOI:10.11646/palaeoentomology.6.5.10
SIMON ROSSE-GUILLEVIC, CORENTIN JOUAULT, MANUEL BRAZIDEC
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Abstract

The Cretaceous fossil record of the aculeate superfamily Chrysidoidea has been greatly enriched in the past few years, thanks especially to the abundance of available material in the late Albian-early Cenomanian amber from the Kachin state (Myanmar). We here document the discovery of a new genus and species, Thagyaminobythus martini gen. et sp. nov., from Kachin amber, emphasizing the extraordinary diversity of chrysidoid wasps in this deposit. The genus is left as incertae sedis within the superfamily because it exhibits a combination of Scolebythidae, Bethylidae and Chrysididae features. We discuss the possibility that Thagyaminobythus martini gen. et sp. nov. could retract its posterior metasomal segments and the co-occurrence of such a structure in several chrysidoid families.
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中白垩世克钦琥珀一新种(膜翅目:茧蜂总科),具明显的交代结构
近年来,针状超科Chrysidoidea的白垩纪化石记录得到了极大的丰富,特别是得益于缅甸克钦邦的阿尔比晚期-塞诺曼早期琥珀的丰富资料。我们在克钦琥珀中发现了一个新的属和种,Thagyaminobythus martini gen. et sp. nov.,强调了该沉积物中黄蜂的非凡多样性。该属在超科中被保留为inintertae sedis,因为它表现出一种综合了Scolebythidae, Bethylidae和chrysiddidae的特征。我们讨论了Thagyaminobythus martini gen. et sp. 11 .可以收缩其后转移节的可能性,以及这种结构在几个chrysidoid科中共同出现的可能性。
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