A venomous new species of pitviper, named after the ancient philosopher Laozi, has been discovered in the biodiversity-rich forests of western Sichuan, China.
A Case of Mistaken Identity
Researchers from the Chengdu Institute of Biology and Giant Panda National Park have formally described a new species of pitviper, Trimeresurus lii (Huaxi Green Pitviper). For years, this snake was misidentified as the common bamboo pitviper, Trimeresurus stejnegeri.
Key Discovery Details
- Genetic and morphological analyses confirmed it as a distinct evolutionary lineage.
- The species is named after the philosopher Laozi (Li Er), reflecting the conservation mission of Giant Panda National Park.
- It is the 58th species of the Trimeresurus genus and the second of its subgenus found in Sichuan.
Physical Characteristics
Adults can grow up to nearly 80 cm in length. Both sexes share a grassy green body color, but key differences help identify them:
- Males feature a tricolor stripe (red and white) on their sides and amber eyes.
- Females have a yellow stripe and orange-yellow eyes.
- Smooth head scales distinguish this species from its closest relatives.
Habitat and Risk
The Huaxi Green Pitviper inhabits the humid forests of Mt. Emei and Xiling Snow Mountain—a recognized biodiversity hotspot. The species is venomous and may pose a medical risk to humans sharing its habitat.
Publication and Importance
The discovery was published in the journal Zoosystematics and Evolution on January 30. Researchers emphasize the need for continued field surveys in biodiversity hotspots to uncover further hidden species.