Electrodysagrion lini gen. et sp. nov., the oldest Dysagrionini (Odonata: Zygoptera: Dysagrionidae) from mid-Cretaceous Burmese amber. (September 2017)

• Record Type: Journal Article
• Authors: Zheng, Daran; Chang, Su-Chin; Nel, André; Jarzembowski, Edmund A.; Zhuo, De; Wang, Bo
• Is Part Of: Cretaceous research. Volume 77(2017)
• Page Start: 44
• Page End: 48
• Publication Date: 2017-09
• Subjects: Dysagrionidae -- Dysagrionini -- Zygoptera -- Cenomanian -- Cretaceous -- Burmese amber; Geology, Stratigraphic -- Cretaceous -- Periodicals; 551.77
• DOI: 10.1016/j.cretres.2017.05.008
• Languages: English
• ISSNs: 0195-6671

Abstract

Abstract: The dysagrionid damselflies are relatively diverse in Burmese amber, with two genera already recorded. A new dysagrionid damselfly, Electrodysagrion lini Zheng, Nel and Wang, gen. et sp. nov., corresponding to the oldest record of the tribe Dysagrionini, is described herein. It has the unique 'sieblosiid-dysagrionine' type of discoidal cell. It differs from other genera of Dysagrionini in having no antenodal crossveins distal of Ax2, Arc aligned with Ax2, and only one row of cells in the cubito-anal area below the nodus. This find puts the origin of Dysagrionini back to at least the mid-Cretaceous.