Geocoris collaris Puton, 1878a: 42. New name for thoracicus Puton, 1874.
Geocoris thoracicus Puton, 1874d: 452 (junior secondary homonym of Opthalmicus thoracicus Fieber, 1861). LT (Péricart, 1996c: 107): male, Algeria, Biskra; MNHN.
Geocoris thoracicus var. confluens Lethierry & Puton, 1876: 28. LT (Péricart, 1996c: 107): female, Algeria, Biskra; MNHN.
Geocoris collaris var. dolosus Montandon, 1907d: 323. ST(S): Algeria; lost? #Geocoris collaris var. vestitus Montandon, 1917: 47. HT: Egypt; lost?