Locastra ardua was created in 1902.
Locastra pachylepidalis was created in 1896.
Locastra bryalis was created in 1930.
Locastra crassipennis was created in 1857.
Locastra muscosalis was created in 1866.
Platyptilia ardua was created in 1927.
The literal meaning of ardua is something like difficulties, challenges, but it is best known in the saying Per ardua ad astra, which is best translated as Through adversity to the stars. This is the motto of the British Royal Air Force.
Through adversity.
"Per Ardua ad Astra" means "Through adversity to the stars."
'Per Ardua' is Latin . It is part of the motto of the Royal Air Force, "Per ardua ad astra" , meaning 'Through hardships to the stars'.
The motto of Bahia is 'Per ardua surgo'.
Fear no
A/the lofty art/skill in/on the mountains.