COMMON GRASS YELLOW (Syllabus: GS Paper 3 – Env and Eco)

News-CRUX-10     6th July 2024        
Samadhaan

Context: For the first time, a large-scale migration of Common Grass Yellow was observed during the three-day butterfly survey which concluded at the Mudumalai Tiger Reserve (MTR) recently.

Common Grass Yellow

  • Distribution: The Common Grass Yellow butterfly, known scientifically as Eurema hecabe, is widely distributed across Asia, North America, Africa, and Australia.
  • Habitat: They prefer flying close to the ground in open grassy or bushy terrains, which is reflected in their common name.
  • Features:

o Coloration: Their wings display vibrant yellow hues ranging from sultry sulfur shades to lush lemon yellows, exhibiting 'seasonal polyphenism' influenced by seasons and location.

o Wing Markings: The forewings feature broad, irregular black outer markings, while the underside displays various black marks with a yellow center.

o Behavior: Often observed in large groups, females typically forage alone for nectar from a wide array of flowering plants.

o Migration: Exhibiting migratory behavior, these butterflies are known to migrate in significant numbers across Africa and much of Asia south of the Himalayas.

  • Conservation Status:

o IUCN Red List: Listed as Least Concern on the IUCN Red List, indicating a stable population trend.

o Legal Protection: Not legally protected in India under any schedules of the Wildlife (Protection) Act, 1972.

Mudumalai Tiger Reserve (MTR)

  • Location: Nilgiris District of Tamil Nadu, spanning 321 sq. km. at the tri-junction of Karnataka, Kerala, and Tamil Nadu.
  • An integral part of the Nilgiris Biosphere Reserve, India's first Biosphere Reserve.
  • Border Shared With: Wayanad Wildlife Sanctuary (Kerala) to the West, Bandipur Tiger Reserve (Karnataka) to the North, Nilgiris North Division to the South and East, and Gudalur Forest Division to the South West.



Samadhaan