Renamed to Geranomyia sp. (genus) cnm2, because of obvious differences with Geranomyia sp. (genus) cnm1. See http://canberranaturemap.org/Community/Sightings/Details/3346870
Leave it as it is for now. Take a look at the venation between cnm1 and cnm2, they are not different. In the Tipulidae wing venation is diagnostic at subfamilies, tribe and genera levels.