Citrogramma difficile (Curran)  

Species related with Citrogramma gedehanum and C. fascipleurum. Males differ from C. gedehanum only by the abdominal pattern and from C. fascipleurum by yellow facial and notopleural pilosity and black anepimeron. Females have lunule dark and frons with a medial dark macula, in comparison with females of C. fascipleurum, which have lunule yellow and frons yellow medially. Females of C. difficile and C. gedehanum only differ in their occipital pilosity, which is black on dorsal 1/3 in C. difficile.