Symmerus

 ( Ditomyiidae ) 

Symmerus is a genus of fungus gnats and gall midges in the family Ditomyiidae. There are about five described species in Symmerus.

• Symmerus akikoae Saigusa, 1973
• S. annulatus (Meigen, 1830) ^{i c g}
• S. antennalis Okada, 1936
• S. balticus Edwards, 1921
• S. brevicornis Okada, 1939
• Symmerus coqula Garrett, 1925 ^{i c g}
• S. defectivus (Hermann Loew, 1850)
• S. elongatus Saigusa, 1973
• S. fuscicaudatus Saigusa, 1973
• Symmerus kubani Ševčik, 2000
• Symmerus latus Ostroverkhova, 1979
• Symmerus lautus (Hermann Loew, 1870) ^{i c g b}
• S. nepalensis Munroe, 1974
• Symmerus nobilis Lackschewitz, 1937
• S. pectinatus Saigusa, 1966
• Symmerus uncatus Munroe, 1974 ^{i c g b}
• S. vockerothi Munroe, 1974 ^{i c g b}