Posterior spiracular openings (slits)  
  Part of: Ramaraj P, Selvakumar C, Ganesh A, Janarthanan S (2014) Report on the occurrence of┬ásynanthropic derived form of Chrysomya megacephala (Diptera: Calliphoridae) from Royapuram fishing harbour, Chennai, Tamil Nadu, India. Biodiversity Data Journal 2: e1111. https://doi.org/10.3897/BDJ.2.e1111