The “Deilephila Daucus,” allied to “Lineata,” a North American species,
is said to occur in Teneriffe, but the author has not seen a specimen.
If such a species is really found in the island, it is more probably D.
Livornica, which is common in South Europe and throughout Africa, and
is found in Madeira. Either of the above species may be distinguished
from D. Tithymali by the white lines on the wings, but D. Livornica has
only four longitudinal white stripes on the thorax, whereas D. Daucus
has six. D. Livornica is a rarity in England, but is found throughout
all the warmer parts of the Old World.