Phase contrast X-ray synchrotron microtomography and the oldest damselflies in amber (Odonata: Zygoptera: Hemiphlebiidae) Author Lak, Malvina Author Fleck, Günther Author Azar, Dany Author Engel Fls, Michael S. Author Kaddumi, Hani F. Author Neraudeau, Didier Author Tafforeau, Paul Author Nel, André text Zoological Journal of the Linnean Society 2009 2009-08-31 156 4 913 923 https://academic.oup.com/zoolinnean/article-lookup/doi/10.1111/j.1096-3642.2008.00497.x journal article 10.1111/j.1096-3642.2008.00497.x 0024-4082 5444624 ELECTROHEMIPHLEBIA GEN. NOV. Etymology: The genus-group name is a combination of the Greek term electron (meaning, ‘amber’) and Hemiphlebia , type genus of the family. The name is feminine. Type species: Electrohemiphlebia barucheli sp. nov. Diagnosis: Very small damselflies; head not very transverse; clypeofrontal sulcus deep; antefrons with two strong gibbosities separated by a median depression; strong sulcus between frons and vertex (i.e. the plate bearing the ocelli, limited anteriorly by the frons, laterally by the eyes and posteriorly by the occiput); posterior ocelli on a high gibbosity well separated from others and from the vertex and frontal part of frons by complete sulci set inside strong depressions; suture between vertex and occiput rather well pronounced; pterothoracic interpleural suture only present around metastigmal area; protibial comb absent; wings with short petiole; arculus distinctly distal of Ax2; forewing discoidal cell basally opened, with RP + MA, basal part of MA, and MAb aligned or nearly so; angle between MAb and MP + CuA rather acute in forewing discoidal cell; hindwing discoidal cell basally closed; base of RP3/4 close to subnodus; base of IR2 opposite subnodus; subnodus vertical.