Opius (Allophlebus) singularis Wesmael, 1835

Distribution in Iran. Guilan province—Roodsar (Ghahari et al. 2012b).

General distribution. Armenia, Austria, Belgium, Bulgaria, Croatia, Czech Republic, Denmark, England, Finland, France, Georgia, Germany, Greece, Hungary, Iran, Ireland, Italy, Korea, Lithuania, Mongolia, Montenegro, Netherlands, Poland, Romania, Russia, Serbia, Slovakia, Spain, Sweden, Switzerland, Tunisia and Turkey.