The host, Dysdercus lunulatus Uhler (= albidiventris Stahl) (fam. Pyrrhocoridae, det. by C. Schaefer) was collected on a vegetation along Rio Tigre near Dos Brazos, Osa peninsula.

14BT cells in culture: live cells, phase contrast (left), fixed cells stained by Giemsa (right). Cells are promastigotes.

13BT cells in a nonaxenic culture