Alternative combinations: Glossina oligocena, Paloestrus oligocenus
Synonym: Glossina veterna Cockerell 1916
Full reference: S. H. Scudder. 1892. Some Insects of special interest from Florissant, Colorado and other points in the Tertiaries of Colorado and Utah. Bulletin of the United States Geological Survey 93:1-25
Sister taxon: Glossina osborni
- Glossina oligocenus: MCZ 54262, an exoskeleton (thorax and wings). Its type locality is Florissant (MCZ Collection), which is in a Chadronian lacustrine - large shale in the Florissant Formation of Colorado.
- Glossina veterna: USNM 66281, an exoskeleton. Its type locality is Florissant (Wilson coll), which is in a Chadronian lacustrine - large shale in the Florissant Formation of Colorado.
Average measurements (in mm): body 12.5 x 5.6, forewing length 10.9, thorax width 7.00, wing length 16.0