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ICAR JRF Entomology 29 Jun 2024Shift 1
MCQ (Single Correct) +4 −1
The lady bird beetle that predominantly feeds on plant leaves is
EXPLANATION Pests of Vegetable Crops & Management
  • Phytophagous Ladybird Beetles (Subfamily Epilachninae):
  • Feeding Habit: While the vast majority of ladybird beetles (family Coccinellidae) are beneficial predators feeding on aphids, scales, and mealybugs, the subfamily Epilachninae contains strictly phytophagous (herbivorous) species.
  • The Hadda Beetle: Epilachna vigintioctopunctata (28-spotted potato beetle) feeds voraciously on solanaceous and cucurbitaceous leaves (brinjal, potato, tomato), skeletonizing foliage by scraping chlorophyll.
  • Predatory Coccinellids Listed: Adonia variegata, Illeis cincta (mycophagous on powdery mildew), and Propylea dissecta are beneficial.
  • Conclusion: Epilachna vigintioctopunctata is the phytophagous ladybird beetle (Option 2).

Correct option: (2) Epilechna vigintioctopunctata

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