A new remarkable big-eyed minute litter bug in Cenomanian Kachin amber from Myanmar (Hemiptera, Dipsocoromorpha, Leptopodidae)

IF 1.9 3区地球科学 Q1 GEOLOGY

Cretaceous Research Pub Date : 2024-05-09 DOI:10.1016/j.cretres.2024.105919

Jun Chen , De Zhuo

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Abstract

The Dipsocoromorpha is a small modern heteropteran infraorder, with some fossils documented in Mesozoic amber in recent years. We herein report a new remarkable specimen trapped in mid-Cretaceous Kachin amber, which can be attributed to Dipsocoromorpha: Schizopteridae. Kuanzuia cavanii gen. et sp. nov. is erected for the new specimen on the basis of the following unique autapomorphic characteristics amongst known dipsocoromorphans: pronotal second and third lobes completely fused together and embowed, metafemora nearly triangular in lateral view and with one row of c. 20 strong ventral spines, and metatibiae greatly curved at about its 2/3 length. Mesozoic dipsocoromorphan fossils reported in America, Lebanon, France and Myanmar provide paleontological evidences that this ancient heteropteran insect lineage had probably been distributed worldwide at latest in the Early to mid-Cretaceous. Our new finding further indicates that compared to their modern descendants, early dipsocoromorphans in the late Mesozoic were flourishing and also likely with high morphological disparity.

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缅甸克钦琥珀中发现的一种新的非凡的大眼小虫（半翅目，二足目，鳞翅目

双翅目（Dipsocoromorpha）是一种小型的现代异翅亚目，近年来在中生代琥珀中发现了一些化石。我们在此报告了在白垩纪中期克钦邦琥珀中发现的一个新的非凡标本，该标本可归属于Dipsocoromorpha：Schizopteridae.Kuanzuia cavanii gen. et sp. nov.是根据已知的二棘尾目动物中以下独特的自形特征而命名的：前胸的第二和第三裂片完全融合在一起并有凹陷，侧视图中的metafemora近似三角形，并有一排约20个粗壮的腹棘，中胫在约2/3的长度处有很大的弯曲。在美国、黎巴嫩、法国和缅甸等地发现的中生代二齿昆虫化石提供了古生物学证据，证明这一古老的异翅昆虫类群很可能最晚在白垩纪早中期就已分布于世界各地。我们的新发现进一步表明，与它们的现代后代相比，中生代晚期的早期二翅目昆虫十分繁盛，而且很可能形态差异很大。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Cretaceous Research 地学-地质学

CiteScore

4.10

自引率

19.00%

发文量

235

审稿时长

12 weeks

期刊介绍： Cretaceous Research provides a forum for the rapid publication of research on all aspects of the Cretaceous Period, including its boundaries with the Jurassic and Palaeogene. Authoritative papers reporting detailed investigations of Cretaceous stratigraphy and palaeontology, studies of regional geology, and reviews of recently published books are complemented by short communications of significant new findings. Papers submitted to Cretaceous Research should place the research in a broad context, with emphasis placed towards our better understanding of the Cretaceous, that are therefore of interest to the diverse, international readership of the journal. Full length papers that focus solely on a local theme or area will not be accepted for publication; authors of short communications are encouraged to discuss how their findings are of relevance to the Cretaceous on a broad scale. Research Areas include: • Regional geology • Stratigraphy and palaeontology • Palaeobiology • Palaeobiogeography • Palaeoceanography • Palaeoclimatology • Evolutionary Palaeoecology • Geochronology • Global events.