Long live the King Cobra(s): Scientists recategorize world’s longest venomous snakes into 4 distinct species, with one from the Western Ghats

Sub: Envi

Sec: Species

Context:

The king cobra, previously considered one species, has been reclassified into four distinct species across various regions: Mainland Asia, Maritime Southeast Asia, The Western Ghats of India, Luzon Island, Philippines

Key Discoveries:

In 2021, the team identified four geographically separate lineages, termed as “confirmed candidate species (CCS).”
- Endemic Western Ghats lineage (India)
- Widespread Asian mainland lineage (northern/eastern India, China, Thailand)
- Malesian lineage (Malay Peninsula, Greater Sunda Islands, parts of the Philippines)
- Isolated Luzon Island lineage (Philippines)

Four New King Cobra Species:

Northern King Cobra (Ophiophagus hannah)
- Found in:
  - Northern India, Nepal, Bhutan, Tibet
  - Eastern India, China, Myanmar, and parts of Southeast Asia
- The type locality is Shibpur, near Kolkata, India.
Sunda King Cobra (Ophiophagus bungarus)
- Inhabits:
  - Southern Thailand, West Malaysia, Singapore
  - Sumatra, Borneo, Java, Bali, southern Philippines
- Named due to similarities with kraits (genus Bungarus), possibly in morphology or behaviour.
Western Ghats King Cobra (Ophiophagus kaalinga)
- Found in the Western Ghats of India (Tamil Nadu, Kerala, Karnataka, Goa, and parts of Maharashtra).
- Prefers mid-elevation rainforests but can be found from low foothills to high-elevation montane forests.
- The name kaalinga comes from Kannada, referencing the snake’s dark colour.
Luzon King Cobra (Ophiophagus salvatana):
- Exclusive to Luzon Island in the northern Philippines.
- Named after the local Tagalog name for the king cobra.

Taxonomic Revision and its implication:

The study presents a formal revision of the genus Ophiophagus, describing two new species.
The new classification has implications for:
- Snakebite management
  - King cobra bites, though rare, can be fatal due to potent neurotoxic venom.
  - The new taxonomy could help in improving treatments for snakebites, as venom compositions may differ between species.
- Species conservation
  - Western Ghats and Luzon king cobras are of particular concern due to their restricted habitats, which are biodiversity hotspots.
  - Threats include habitat destruction, poaching, and fear-driven killings.
- Future research

About the King Cobra:

They are the world’s longest venomous snake.
First Classification (1836): Danish zoologist Theodore Edward Cantor named the king cobra.
Scientific Name: Ophiophagus hannah
- Ophiophagus: Derived from Greek, meaning “snake-eater” (ophis for snake, phagos for eater).
It preys chiefly on other snakes and occasionally on some other vertebrates, such as lizards and rodents.
It is a highly venomous and dangerous snake when agitated or provoked that has a fearsome reputation in its range, although it is typically shy and avoids confrontation with humans when possible.
The king cobra is a prominent symbol in the mythology and folk traditions of India, Sri Lanka and Myanmar.
It is the national reptile of India.
It is threatened by habitat destruction and has been listed as Vulnerable on the IUCN Red List since 2010.
In Southeast Asia, the king cobra is threatened foremost by habitat destruction owing to deforestation and expansion of agricultural land.
It is also threatened by poaching for its meat, skin and for use in traditional Chinese medicine.
The king cobra is listed in CITES Appendix II.
It is protected in China and Vietnam.
In India, it is placed under Schedule II of Wildlife Protection Act, 1972.
Killing a king cobra is punished with imprisonment of up to six years.