Queen Alexandra’s Birdwing: Essential Facts Uncovered

Queen Alexandra’s Birdwing is a fascinating butterfly species, known for its remarkable size and captivating colors.

As the largest butterfly in the world, the female can exhibit a wingspan of nearly ten inches, effortlessly grabbing the attention of enthusiasts and biologists alike.

These mesmerizing creatures display distinct sexual dimorphism, with males showcasing bluish-green wing flashes to attract their larger, more subdued-colored female counterparts.

Though their extraordinary size and striking colors make the Queen Alexandra’s Birdwing a fascinating subject, it’s essential to also understand their vulnerable status and the importance of conservation efforts to protect this species.

Basic Information About Queen Alexandra’s Birdwing

Largest Butterfly in the World

Queen Alexandra’s Birdwing is the largest butterfly in the world. The female has a wingspan of nearly ten inches, making it larger than the male.

• Females: Duller colors but larger size
• Males: Smaller but with dazzling bluish-green wings

Scientific Name: Ornithoptera Alexandrae

The scientific name for this magnificent butterfly is Ornithoptera alexandrae.

It was named in 1907 for the Danish Queen Alexandra, giving it its iconic name. Both males and females display distinct color patterns:

These butterflies are not only beautiful and large but also endangered. Conservation efforts help to preserve this fascinating species.

Discovery and History

Albert Stewart Meek, a British naturalist, discovered Queen Alexandra’s Birdwing in 1906. Meek, who was exploring Papua New Guinea at the time, collected the first specimens of this butterfly species.

The naming of this butterfly took place in 1907 by Walter Rothschild, who named it after Queen Alexandra of Denmark.

Physical Characteristics

Sexual Dimorphism

• Female Queen Alexandra’s Birdwing butterflies are generally larger
• Males display more vibrant colors, with bluish-green flashes on their wings

Queen Alexandra’s Birdwing butterflies exhibit noticeable sexual dimorphism. Females are larger than males, but the males have dazzling colors.

Wingspan and Abdomen

Head

• Eyes are larger in males
• Males have more colorful scales on their head

The head of Queen Alexandra’s Birdwing exhibits differences between the sexes. Males have larger eyes and more colorful scales.

Thorax

• Males have a narrower thorax
• Females’ thorax provides support for their larger wings

The thorax of Queen Alexandra’s Birdwing butterflies also varies between the sexes. Males have a narrower thorax, while females have a more robust thorax to support their larger wings.

Proboscis

• Used for feeding on nectar
• Similar length in both males and females

The proboscis of both male and female Queen Alexandra’s Birdwing butterflies is used for feeding on nectar and is similar in length between the sexes.

Life Cycle and Behavior

Eggs

The life cycle of the Queen Alexandra’s birdwing begins with its eggs.

Females lay their eggs on the leaves of the host plant, typically the pipevine or birthwort species.

These eggs are around 4mm in diameter and creamy white in color.

Larvae and Pupa

Upon hatching, the larvae (caterpillars) feed on the toxic leaves of the host plant. This natural defense mechanism protects the larvae from predators.

As they grow, the larvae go through multiple stages called instars before entering the pupa (chrysalis) phase of their life cycle.

Adult Butterfly

Once the pupa stage is complete, the adult Queen Alexandra’s birdwing emerges.

These stunning butterflies have a wingspan of up to 11 inches, making them the world’s largest butterfly species.

The proboscis is a specialized feeding tube used to extract nectar from flowers.

Mating and Pheromones

Mating in Queen Alexandra’s birdwings is initiated by the release of pheromones from the female to attract potential mates.

This chemical signal ensures that males can locate the females for reproductive purposes.

Territorial Behavior and Diet

Queen Alexandra’s birdwings exhibit territorial behavior, with males defending their chosen areas.

They are substantial but not aggressive, and tend to chase other males away instead of fighting. Their diet consists of:

• Nectar from flowers, which provides energy
• Minerals from puddling, where they extract nutrients from damp soil

Habitat and Distribution

Papua New Guinea

Queen Alexandra’s Birdwing (Ornithoptera alexandrae) is native to Papua New Guinea, specifically found in the northeastern part of the country ¹.

This butterfly species is limited to a small distribution range in this region.

Rainforests

These massive butterflies inhabit tropical rainforests, where they seek out essential resources such as food, water, and nesting sites.

Human-caused development has led to fragmentation and degradation of their habitat, posing a significant threat to their survival ².

Canopy

• The rainforest canopy characterizes the primary habitat of Queen Alexandra’s Birdwing.
• They primarily reside in the upper layers of trees.

Being dwellers of the canopy, these butterflies have adapted to a life high above the ground.

Their bright colors and large wingspan provide them with benefits such as camouflage amid the foliage and efficient flight in the dense rainforest environment.

Conclusion

Queen Alexandra’s Birdwing is a captivating butterfly, renowned for its immense size and vibrant colors. Holding the title of the world’s largest butterfly, females can flaunt a wingspan nearing ten inches.

Exhibiting distinct sexual dimorphism, the males dazzle with their bluish-green wing flashes, contrasting the more muted hues of the females. Native to Papua New Guinea, they predominantly inhabit the rainforest canopies.

Their lifecycle, from eggs laid on pipevine leaves to the adult butterfly, is intriguing. However, it’s crucial to recognize their vulnerable status and the pressing need for conservation to safeguard this magnificent species.