Tabanus lineola
In our hotel, near Cenote Ik Kil.
https://panamabiota.org/stri/taxa/index.php?tid=183056&taxauthid=1&clid=0

"Tabanus lineola", also known as the striped horse fly, is a species of biting horse-fly. It is know from the eastern and southern United States and the Gulf coast of Mexico.
Similar species: True Flies
By Patomarazul
All rights reserved
Uploaded Jul 5, 2022. Captured Sep 11, 2011 16:34 in Carretera Merida - Cancun Km.122 Chichén Itzá, Yuc., Mexico.