Why these common dragonflies are named after a carpenter’s leveling tool

Nature · Published 3 October 2026 Swipe more like this →

In short: The Libellulidae family represents the largest group of dragonflies on Earth, with over 1,000 distinct species. Known as skimmers, darters, and perchers, these insects are found nearly everywhere. Their name, however, hides a surprising origin: it comes from the Latin word for a carpenter’s level, reflecting their uncanny ability to hover perfectly still.

The Libellulidae family is a diverse group of dragonflies that includes familiar types like the whitetails, meadowhawks, and skimmers. While the family is widely distributed across the globe, it is not without its rarities; for instance, the genus Libellula includes the endangered Libellula angelina, found in Japan. Many members of this family are celebrated for their striking appearances, ranging from the brightly colored species in the southern United States to the notably beautiful tropical varieties found in genera such as Trithemis and Zenithoptera.

Beyond their aesthetic appeal, these insects possess unique physical traits. Their larvae are characterized by a stout body and a specialized lower lip, or labium, which functions as a mask covering the lower portion of the face. This anatomical feature is a hallmark of the family, which taxonomists classify using the standard zoological suffix -idae attached to the type genus, Libellula. The name itself is a nod to the insect's flight behavior, as the Latin term libella refers to a tool used by carpenters to ensure surfaces are level, mirroring the dragonfly’s capacity to remain stationary and balanced in mid-air.

The evolutionary history of the Libellulidae stretches back millions of years. The earliest known record of the family is the fossil genus Palaeolibellula, which dates to the Turonian period in Kazakhstan. Since then, the family has left a rich fossil trail across Europe, with various extinct genera identified in sites ranging from Denmark to Croatia and Italy. These ancient specimens, such as the early Eocene Molertrum or the Miocene-era Sloveniatrum, provide a window into the long-standing presence of these dragonflies in the natural world. Today, the family remains a dominant force in the insect kingdom, serving as the most frequently encountered group of dragonflies for observers worldwide.

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