Lenziola nigra Kieffer, 1925 – synonym of Fleuria lacustris
Lenziola nigra var. brevicornis Kieffer, 1925 – synonym of Fleuria lacustris
Leptochironomus paraderibae Laville and Tourenq, 1967 – synonym of Microchironomus deribae
Limnochironomus atrovittatus Kieffer, 1922 – synonym of Dicrotendipes modestus
Limnochironomus bipartitus Kieffer, 1920 nec Chironomus bipartitus Kieffer, 1915 – synonym of Dicrotendipes modestus
Limnochironomus fuscicauda Kieffer, 1920 – synonym of Dicrotendipes modestus
Limnochironomus miriforceps Kieffer, 1922 (a questionable synonymy) – synonym of Dicrotendipes lobiger
Limnochironomus pulsus var. italica Lenz in Goetghebuer and Lenz, 1957 – synonym of Dicrotendipes modestus
Limnophyes macrocerus Goetghebuer, 1937 – synonym of Mesosmittia flexuella
Lundstroemia agameta Forsyth, 1971 – synonym of Paratanytarsus grimmi
Lundstroemia parthenogenetica Kruger, 1941 – synonym of Paratanytarsus grimmi
Lundstroemia pseudopraecox Goetghebuer, 1938 nom. nov. for praecox: Goetghebuer, 1921; 1928 nec Wiedemann, 1818, in Goetghebuer – synonym of Paratanytarsus austriacus