remigium
/rɪˈmɪdʒɪəm/Entomology
noun
The anterior region of an insect wing, which is supported by relatively rigid wing veins and is responsible for most of the movement required for flight.
Origin
Late 19th century. From classical Latin rēmig-, rēmex remex + scientific Latin -ium, perhaps after pterygium. Perhaps compare classical Latin rēmigium action of rowing.