Answer : 3. "Sound Producing Insects"
Explanation :

Scientists discovered a new species of cicada in Meghalaya, which has been named “Butterfly Cicada”. Cicadas, belonging to the family Cicadidae, are sound-producing insects with two pairs of wings, compound eyes and ocelli. They are 2 to 5 cm in length and the males produce a loud sound through a vibrating membrane. Females usually lay eggs in woody plants.