Classis V. Odonata Author Fabricius, J. C. text Supplementum Entomologiae systematicae 1798 1798-12-31 5 283 287 journal article 24914 10.5281/zenodo.3532983 c1589979-f5b3-453f-909c-042efaea6990 3532983 AESHNA . Labium trifidum: laciniis aequalibus, lateralibus truncatis, dentatis, intermedia emarginata. Antennae tenuissimae, filiformes.