pium

plural piums

1. A black fly, a bloodsucking insect of the genus Simulium, found in Brazil.

   As I walk down the path, almost slide down the steep bank to the bathing spot, mosquitoes have largely retreated (they never go away entirely) and piums are only just beginning to wake.

   2010, R.M.W. Dixon, I Am a Linguist: With a Foreword by Peter Matthews, page 19

   1 more example

   […] piums had no preference on the human body. They bit wherever they could touch skin. If the very sensitive felt them biting and ran a hand over, say, the face, the tiny piums calmly sacrificed their lives to their gluttony.

   1951, Arthur J. Burks, Bells Above the Amazon, page 40