Multiple choice

Hind wings in housefly are reduced and modified into knob-like structures called

  1. calyptron

  2. plastron

  3. haltere

  4. frenulum

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Haltere is one pair knob-like structures protruding from metathorax of dipterus flies (housefly). They are modified hind wings and vibrate rapidly during flight.