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Nilgiris Flies Identified: No Health Threat Found
21 Jul
Summary
- Flies swarming Kotagiri and Coonoor are fungus gnats, not harmful black flies.
- These gnats' larvae feed on roots and are pests in mushroom farming.
- Natural predators are declining due to pesticide use in the region.
Recent reports of fly swarms in Kotagiri and Coonoor, The Nilgiris, have been clarified by wildlife biologists. The insects identified are dark-winged fungus gnats (Sciaridae), not the harmful 'black flies' initially suggested. These gnats are harmless to humans and do not bite or sting.
While not a health risk, the larvae of these fungus gnats can damage young seedlings and are a significant pest in commercial mushroom farming. They thrive in damp soil and decaying organic matter, frequently appearing during monsoon and summer seasons. Researchers noted that natural predators like rove beetles are declining due to pesticide use.
The investigation, which included participation from various conservation groups, took place after local residents reported eye irritation and economic impact, particularly on eateries. Fumigation efforts by the civic body have proven ineffective. Experts recommend identifying and addressing moist breeding sources to control the infestation and urge the public to avoid spreading panic.
