How the stag beetle became the world’s most expensive insect and how much it costs

A single stag beetle can cost up to Rs. 75 lakh, making it one of the priciest insects globally. This insect is not only rare but is also considered a symbol of good luck, with some believing that owning one can bring sudden wealth. The belief that stag beetles can make a person wealthy has added to their high market value.

Unique Characteristics
Stag beetles are noted for their enlarged mandibles and male polymorphism. A recent study published in the Scientific Data journal described these insects as constituting a "significant saproxylic assemblage in forest ecosystems." The male stag beetle’s mandibles resemble a stag’s antlers, which they use to fight for mating opportunities during the breeding season.


Habitat and Distribution
Stag beetles are sensitive to cold temperatures and thrive in warm, tropical climates. They naturally inhabit woodlands but can also be found in urban areas like parks and gardens, where dead wood is abundant. They are also seen in hedgerows and traditional orchards. These environments provide the necessary conditions for their survival and reproduction.

Diet and Feeding Habits
Adult stag beetles primarily consume sweet liquids such as tree sap and juice from rotting fruit. They mainly rely on the energy reserves they accumulated during their larval stage, which sustains them throughout their adult life. Stag beetle larvae feed on dead wood, using their sharp jaws to scrape and extract splinters from the fibrous surface. Because they exclusively eat dead wood, they do not pose a threat to living trees or shrubs, making them harmless to healthy vegetation.

Lifespan and Physical Characteristics
According to the Natural History Museum in London, stag beetles weigh between 2 and 6 grams and live for an average of 3 to 7 years. Males typically measure 35–75 mm in length, while females are 30–50 mm long. Their size and lifespan contribute to their uniqueness and rarity.

Medicinal Use
Stag beetles are also employed in medicinal practices, although specific applications were not detailed in the available sources. Their use in medicine adds another layer to their value and intrigue.

The stag beetle’s high price and unique attributes have made it a subject of fascination and study. As a significant part of forest ecosystems, these insects play an important role in the decomposition process, aiding in nutrient cycling and forest health. Their rarity and symbolic significance in various cultures have further elevated their status and market value.