Figure 1
The T. nattereri is found predominantly in the states of the North and northeast regions of Brazil (in blue). In places such as Lagoa Mundaú (A.A) and Lagoa do Roteiro (A.B), both in Alagoas. T. nattereri has the most complete venom apparatus (B), consisting of four stings, two of which are located in the dorsal region (1st segment of the dorsal fin) in the median line, and two laterally placed above the pectoral fin in the opercular region. They all have communication with the venom glands. The inoculation of the venom occurs mainly in the palmar and plantar region and the injury in patients is characterized by pain, edema and necrosis difficult to heal (C). All images were taken by the co-author Dr. Monica Lopes-Ferreira.
