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Issue:ISSN 1000-7083
          CN 51-1193/Q
Director:Sichuan Association for Science and Technology
Sponsored by:Sichuan Society of Zoologists; Chengdu Giant Panda Breeding Research Foundation; Sichuan Association of Wildlife Conservation; Sichuan University
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Your Position :Home->Past Journals Catalog->2020 Vol.39 No.3

A Preliminary Study on the Geometric Morphology of the Higher Taxa in Chinese Lauxaniidae (Diptera: Lauxanioidea)
Author of the article:QI Ling, HE Xiangyi, LI Wenliang*
Author's Workplace:College of Forestry, Henan University of Science and Technology, Luoyang, Henan Province 471023, China
Key Words:Lauxaniidae; wing veins; geometric morphological; taxonomy
Abstract:By using the wing vein as the object, a preliminary study on the higher taxa in Chinese Lauxaniidae (Diptera, [JP+1]Lauxanioidea) was conducted by landmark-based geometric morphometric analysis. Fourteen homologous landmarks for the wings of 252 known species of Chinese Lauxaniidae belonging to 20 genera, 2 subfamilies, were analyzed by principal component analysis (PCA) and canonical variate analysis (CVA). The results showed that the analysis of the first 3 principal components for the overall species and subfamilies could explain 64.085% of the variation of the veins, while the same analysis for the representative genera could explain 100% of them, indicating that the terminal points of R2+3 vein, black short bristles on costa and r-m vein were the sites with high variation degree, and the terminal points of R4+5 vein, M1 vein and CuA1 vein were stable sites. The PCA results of subfamilies revealed that high dispersion was presented on principal component 1 (PC1), and this suggested that the terminal point of the black short bristles was an important characteristic to identify the subfamilies. The CVA results of inter-general revealed a good aggregation in the 4 representative genera and a high dispersion among them, indicating that the landmark method was applicable to identify the genera. This study confirms the feasibility of geometric morphology method in Lauxaniidae classification, and lays a foundation for further relevant research.
2020,39(3): 301-308 收稿日期:2019-12-03
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