Work

Two New Species of Mesochorista (Insecta, Mecoptera, Permochoristidae) from the Guadalupian Yinping Formation of Chaohu, Eastern China

Year: 2025

Type: article

Abstract: Permochoristidae is a megadiverse mecopteran group that has mainly been reported from Russia and Australia, whereas records from China remain scarce. In this report, two new species of Mesochorista are described and illustrated from the Guadalupian Yinping Formation, Eastern China. Mesochorista tillyardi Lian and Huang, sp. nov. is characterized by the forewing covered with dense oval spots, and Sc1 closely approximal to R1 and connected by a short sc-r crossvein. Mesochorista yinpingensis Lian and Huang, sp. nov. is characterized by the forewing covered with dense irregularly colored patches, Sc1 devoid of expanded area, and M with only five branches. Based on a detailed discussion of the type species and other co-occurring species of Mesochorista and Permochorista, in light of the new insights into Sc3, we support that Permochorista is a junior synonym of Mesochorista.

Source: Insects

DOI: 10.3390/insects16111130

Authors: Xinneng Lian, Chenyang Cai, Zhuo Feng, Diying Huang

Institutions: Yunnan University, Chinese Academy of Sciences, Nanjing Institute of Geology and Paleontology, State Key Laboratory of Palaeobiology and Stratigraphy

Language: English

Topic: Fossil Insects in Amber

Subfield: Ecology, Evolution, Behavior and Systematics

Field: Agricultural and Biological Sciences

Domain: Life Sciences

Open Access status: gold

Estimated APC paid: $3,137

Funders: National Natural Science Foundation of China, Yunnan Provincial Science and Technology Department