The incident occurred when the BJP MLA Menka Sardar was about to inaugurate construction of a school at Bada Hasthi village in Ghatsila sub-division of East Singhbhum district.
The MLA applying her consciousness covered her face with and lay down on the ground. She was given cover by Officer-in-charge of Dumaria police station Vinod Kumar Paswan, who was also stung by the insects.
"The possibility of a mischief cannot be ruled out as the inauguration of the school boundary wall was deferred twice in the past," Paswan said.