Triogma is a genus of crane fly in the family Cylindrotomidae.
Biology The larvae of the genus Triogma live on mosses. Adults are to be found in damp wooded habitats.
Distribution Canada, Northern United States, Japan, China & Northern Europe
Species T. exsculpta Osten Sacken, 1865 T. kuwanai (Alexander, 1913) T. nimbipennis Alexander, 1941 T. trisulcata (Schummel, 1829)
References