Phthitogomphus is an extinct genus of odonateG. Bechly. (2018). First record and a new species of the fossil dragonfly genus Proinogomphus (Odonata: Liassogomphidae) from the Early Jurassic of Bascharage in the Grand Duchy of Luxembourg. Zootaxa 4450:108-114 from the Early Jurassic and it is known from the Sachrang Formation of GermanyJ. Cowley. (1942). Descriptions of some genera of fossil Odonata. Proceedings of the Royal Entomological Society of London. Series B, Taxonomy 11:63-78 and Switzerland,W. Etter and O. Kuhn. (2000). An articulated dragonfly (Insecta, Odonata) from the Upper Liassic Posidonia Shale of Northern Switzerland. Palaeontology 43:967-977 and the Schistes bitumineux of Luxembourg.
The type species is Phthitogomphus angulatusA. Nel, X. Martínez-Delclòs, and J. C. Paicheler, M. Henrotay. (1993). Les "Anisozygoptera" fossiles Phylogenie et classification (Odonata). Martinia 3:1-311 and it was initially known as Paragomphus angulatus.A. Handlirsch. (1939). Neue Untersuchungen über die fossilen Insekten mit Ergänzungen und Nachträgen sowie Ausblicken auf phylogenetische, palaeogeographische und allgemein biologische Probleme. II Teil. Annalen des Naturhistorischen Museums in Wien 49:1-240 References