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Bugs & Butterflies UK

Monarch Butterfly | Danaus plexippus EGGS

Monarch Butterfly | Danaus plexippus EGGS

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Danaus plexippus, commonly known as the Monarch butterfly, is one of the most iconic and widely recognized butterfly species in the world. Belonging to the family Nymphalidae, this species is native to North and South America but has also spread to other parts of the world, including Australia, Europe, and Asia. There are now year-round populations in regions of southern Europe and North Africa. It is particularly famous for its remarkable long-distance migration and striking orange, black, and white wing pattern.

The monarch's wingspan ranges from 8.9 to 10.2 cm, with its bright orange wings bordered by black and adorned with white spots. This vibrant coloration serves as a warning to predators, signaling its toxicity due to compounds called cardenolides, which it ingests as a caterpillar by feeding on Milkweed species (Asclepias), its host plant.

The caterpillars are easily identified by their yellow, black, and white stripes. Monarchs undergo multiple generations annually, but it is the final generation of the year that embarks on the extraordinary migration, traveling thousands of kilometers to overwintering sites in Mexico (Eastern population) or coastal California (Western population). Some populations also overwinter in subtropical regions of the US, particularly in Florida where conditions remain hospitable year-round.

Despite its widespread presence, Danaus plexippus faces threats from habitat loss, climate change, and pesticide use, which have contributed to significant population declines. Conservation efforts focus on protecting milkweed habitats and overwintering sites to ensure the survival of this remarkable butterfly species.

Difficulty - Easy (1/10); caterpillars must be kept clean.

Host plants - Milkweed (Asclepias); Squash/Pumpkin slices can be used as a substitute.

Conditions - Room temperature or warmer; butterflies enjoy sunshine.

Lifecycle - Continually brooded; adult butterflies are long-lived.

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