Described as
Thalassomya Schiner, 1856a: p. 219
Type species: Thalassomya frauenfeldi Schiner, 1856
Synonymy
Thalassomyia : variant spelling
Scopelodromus Chevrel, 1903a: p. 1; Type species: Scopelodromus isemerinus Chevrel, 1903 {= Thalassomya frauenfeldi Schiner, 1856}
Galapagomyia Johnson, 1924a: p. 86; Type species: Galapagomyia longipes Johnson, 1924