Ent. Obs. [a. F. tanystome, f. Gr. τανύ-ειν to stretch + στόμα mouth.] Any of Latreille’s second family of Diptera, Tanystomata, including the gad-flies and their allies. Hence † Tanystomate, † Tanystomine, † Tanystomous adjs. Obs.
1860. Mayne, Expos. Lex., Tanystomus … long-mouthed; applied to a Family … of the Diptera: tanystomous.
