The dark cloud of locusts, spread across two kilometres, crossed the suburban city, touched the Delhi-Gurugram border but did not enter Delhi.
The swarms are travelling farther and damaging trees as there are no standing crops for them to feed on, an official said.
The summer and rainy weather is favourable for locusts and they move from one place to another during this time, travelling 150 km in a day.
'They attack standing crops and vegetables.' 'They don't attack people.' 'People are just panicking.'
An advisory issued by the Delhi development commissioner said that residents can distract the locusts by making high-decibel sound through beating of drums, utensils; playing high-volume music, bursting crackers, and burning neem leaves.
According to the Indian Council of Agricultural Research Director General Trilochan Mohapatra, the insects have attacked about 40,000 hectares of land.
The locusts initially entered Rajasthan from Pakistan and from there the swarms moved towards Madhya Pradesh, Haryana, and Punjab over the last few weeks and are now threatening to enter Uttar Pradesh, putting at risk the summer crop.
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