Blue morpho
Morpho menelaus
— Where the name comes from
Morpho is an epithet of Aphrodite, “the shapely one”; menelaus recalls the Spartan king of the Iliad, husband of Helen. The name joins divine beauty to Homeric epic. The dazzling blue of its wings is among the most intense colours in the living world.
— Facts
- Group
- Insects · Insecta
- Order
- Butterflies and moths
- Habitat
- Rainforest understorey and canopy
- Range
- Central and South America, Amazonia
- Size
- 12–15 cm wingspan
- Diet
- Juices of fermenting fruit as an adult; leaves as a caterpillar
- Lifespan
- 2–4 weeks as an adult
— Characteristics
- 01
The blue is not a pigment but an optical effect of the microscopic wing scales.
- 02
The underside of the wings is brown with eyespots: closed, the butterfly vanishes into the undergrowth.
- 03
In flight it flashes between blue and brown with every beat, confusing a pursuer.
— What sets it apart
The morpho’s blue does not exist as a colour: there is not a single blue pigment in its wings. The scales are covered in microscopic ridges arranged in layers that interfere with light, cancelling every wavelength but blue, which bounces back amplified. It is the principle of the soap bubble. Wetted with alcohol, or seen from another angle, the wing changes hue or goes out. That blinding blue is pure architecture of light, and today it inspires screens, fabrics and paints made without pigment.
