New Data Regarding the Presence of Two Insect Larvae Species - Gomphus (Stylurus) Flavipes (Odonata) and Palingenia Longicauda (Ephemeroptera) – in the Lower Sector of the Danube River. Geo-Eco-Marina 2020, 25, 253-264. https://doi.org/10.5281/zenodo.3611187.