Robuta

https://open.clemson.edu/all_data/2689/ "FIGURE 6 in Cytotaxonomy of Simulium (Montisimulium) ghoomense (Dipter" by Sachin Thapa, Willie... FIGURE 6. Photocomposite map of the short arm of chromosome two (IIS) of S. (M.) ghoomense. B: bulge, C: enhanced centromere, Rb: ring of Balbiani.