Alfred Duvaucel

Appealing species names can help foster public engagement in conservation. The sun bear and moon bear are an alluring pair of names for 2 species that co-occur in Southeast Asia, where both are threatened and in need of greater conservation attention. It is often said that these poetic names derive from the bears’ distinctive chest markings, which may resemble a sun and a crescent moon, respectively. This is a catchy but misleading narrative. Both common names were derived –– many years later –– from their Latin generic names. Helarctos, meaning “sun bear,” was so-named in 1825 after the species was discovered in the “hot sun” near the equator of Borneo. The specific epithet malayanus led to the common name Malayan bear, gradually shifting to Malayan sun bear in the early 1900s and simply sun bear by the 1980s, largely without awareness of the name’s origin. The second species was discovered in Tibet in 1823 and named Ursus thibetanus, the Tibet bear. As its distribution became better known in the late 1800s, the common name changed to Himalayan black bear, and the scientific name to U. torquatus, referring to the chest “necklace.” In the early 1900s (until reverting to Ursus in the mid-1980s), a new genus Selenarctos was adopted, meaning “moon bear” — again referencing to the chest marking — while the common name became Asiatic black bear, recognizing its continental distribution. Use of moon bear as a common name has been relatively recent, and still not widely embraced. While evocative names can attract interest and potentially strengthen conservation connections, historical integrity is vital. There is a far more compelling and authentic historical story to tell about these 2 species: both were discovered by the same young French naturalist, who was killed by a rhino soon after, and never adequately credited. I present his remarkable story and discuss its value in conservation outreach.