Butterflies have faceted eyes like all insects. These eyes
enable them to perceive optical stimuluses. Butterflies see their environment
composed of many small, single pictures.
They perceive sounds with their ears on the side-abdomen.
Butterflies taste with the proboscis and mainly with the feet
which are covered with numerous sophisticated sense organelles. Species without
proboscis only taste with their feet.
A butterfly's most sensitive sense organelles can be found on the antennae.
These organelles enable some species to perceive pheromones (females' fragrances)
from a distance of a few miles, even if there are only single molecules of
pheromones in the air.
the branches are hollow to reduce weight