Capus geminus thus became Tytthus geminus , by which name it was known as for well over a hundred years .
When Fieber established the genus Tytthus in 1864 , he named two species to the genus , Zetterstedt 's Capus pygmaeus and Flor 's Capus geminus .
Capus geminus thus became Tytthus geminus , by which name Capus geminus was known as for well over a hundred years .
When Fieber established the genus Tytthus in 1864 , he named two species to the genus , Zetterstedt 's Capus pygmaeus and Flor 's Capus geminus .