A family of the order DIPTERA that includes the TSETSE FLIES. These flies occur only in Africa.

Bloodsucking flies of the genus Glossina, found primarily in equatorial Africa. Several species are intermediate hosts of trypanosomes.

A genus of gram-negative, rod-shaped bacteria in the family ENTEROBACTERIACEAE. They exist only as primary endosymbionts of five species of TSETSE FLIES, found in specialized organelles called mycetomes. The bacteria supply crucial B vitamins (VITAMIN B COMPLEX) which the flies require for fertility.

The relationship between two different species of organisms that are interdependent; each gains benefits from the other or a relationship between different species where both of the organisms in question benefit from the presence of the other.