FIGURE 4 | Brachychalcinus species groups according to color pattern: 1. "B. copei pattern": A. B. copei, LBP 23616, 81.3 mm SL; B. B. restrospina, NUP 21577, 58.7 mm SL; C. B. nummus, LBP 28578, 48.0 mm SL; D. B. parnaibae, MZUSP 87486, 54.1 mm SL. 2. "B. signatus pattern": E. B. orbicularis, ROM 102235, 52.1 mm SL; F. B. signatus, paratype, INPA 5667, 48.4 mm SL. 3. "B. reisi pattern": G. B. reisi, LBP 24499, 54.6 mm SL; H. B. sabaji, paratype, IEPA 4980, 62.8 mm SL, lateral view, left side. Scale bar = 1 mm.