RESEARCH HIGHLIGHTS
  1. The external morphology and distribution of the oral appendages of G. cantor between sexes has been researched through scanning electron microscopy (SEM) for the first time.
  2. Several significant differences between males and females has been found by analyzing the oral appendages of G. cantor with SEM.
  3. The differences in the structure of oral appendages of G. cantor between sexes reflect functional differences in reproductive behaviors.