Gyrinus (Gyrinus) substriatus Stephens, 1828

Distribution in Iran. Mazandaran (Mousavi 2005), Iran (no locality cited) (Ochs 1953).

General distribution. Algeria, Armenia, Austria, Azerbaijan, Belgium, Bosnia Herzegovina, Bulgaria, Byelorussia, Croatia, Czech Republic, Denmark, Estonia, Finland, France, Germany, Great Britain, Greece, Hungary, Iran, Iraq, Israel, Italy, Liechtenstein, Macedonia, Morocco, Netherlands, Norway, Poland, Portugal, Russia (Central, Southern and Northern European Territory, Southern Siberia), Slovakia, Slovenia, Spain, Switzerland, Tunisia, Syria, Turkey, “Transcaucasia”, Ukraine, former Yugoslavia (Mazzoldi 2003), Iran (Guéorguiev 1981).

Comments. Living on the surface of various nutricion-rich, more permanent stagnant and slowly flowing waters. Prefers fresh water, but can also be found in brackish water (Drost et al. 1992).