What is the Difference Between a Butterfly and a Moth?

Butterflies and moths are both members of the order Lepidoptera and share many similarities, but they also have distinct differences. Here are some key differences between butterflies and moths:

1. Antennae

One of the most noticeable differences is in their antennae. Butterflies generally have thin, long antennae that end in club-shaped tips.

Moths, on the other hand, have varied antennae shapes, which can be feathery or thread-like, but they do not typically have clubbed tips.

2. Activity Patterns

Butterflies are generally diurnal, meaning they are active during the day. They are often seen fluttering around in open spaces and are known for their colorful wings. Moths, on the other hand, are primarily nocturnal and are most active during the night. They are often attracted to lights and are known for their muted colors and patterns, which provide camouflage in their natural habitats.

3. Wing Position

When at rest, butterflies usually hold their wings vertically and together over their backs. This position showcases the vibrant colors and patterns on their wings.

Colorful Monarch Butterfly at rest with wings flat

Moths, on the other hand, tend to rest with their wings flat or folded horizontally along their bodies, blending in with their surroundings.

Colorful Moth at rest with wings up.

4. Body Shape

Butterflies typically have slender bodies, with a more streamlined shape. Moths, on the other hand, often have plumper bodies, which can vary in shape from cylindrical to more robust.

5. Pupation

During the pupal stage, butterflies form a chrysalis, which is smooth and hard, often hanging from a surface.

Moths, on the other hand, usually spin a silk cocoon to protect their pupal stage. These cocoons are often hidden in the vegetation or other protected locations.

It’s worth noting that these differences are not absolute, and there are exceptions and variations within both butterflies and moths.

Some day-flying moths can resemble butterflies, and there are some butterflies with clubbed antennae that resemble moths.

Therefore, while these distinctions can be helpful in general, they are not definitive characteristics for identifying every individual butterfly or moth species.