Hyderabad, May 17 -- As dusk arrives, some areas around certain areas of Hyderabad are welcomed, or rather invaded by a swarm of Caddisflies, moth-like insects that are attracted to lights and live near lakes or rivers.

Commercial establishments and homes at Asifnagar, Mallepally, Golconda, Falaknuma, Jahanuma, Bahadurpura, Aliabad, Chandrayangutta, Bandlaguda, Shaheenagar, Kanchanbagh and Santoshnagar are largely affected.

Residents have had enough. "If we do not switch off our lights, these insects creep into our shops. And because of the darkness, customers hesitate to purchase, and hence we suffer," complained Mumtaz Khan, a trader at Mallepally.

Imrana, a housewife, has used everything in her power to ward off the insects. "Even r...