Category;Habitat;Behaviour;Size;Characters;"Limnic, brackish, marine";"Swimming duration";"Adherence to objects";"Swimming motion";"Foot position while swimming";"Directional changes";"Overall size" "Character number";1;2;3;4;5;6;7 "S. arcifera";b/c;a?;?;?;?;?;a "S. atlantica";c;a;?;?;?;?;a "S. bacillifera";c;a;?;?;?;?;b "S. baltica";b/c;a;a;b;a;b;b "S. bicornis";b;a;?;a;a?;a;a/b "S. cecilia";b/c;b;b/c;a;b;a;a "S. cylindrica";d;?;?;?;?;?;a "S. fennica";b/c;?;?;?;?;?;a/b "S. glacialis";c;a;?;?;?;?;a "S. grandis";a;a;a;c;b;b;b "S. grimpei";b/c;a;a;a;b;b;b "S. gyrina";b/c;a†;a†;b/c;b;a;a/b "S. hutchingsi";b/c;a;a;a/b;b;a;a "S. hyperborea";c;a;?;?;?;?;a/b "S. johanseni";c;a;?;?;?;?;b "S. kitina";a;b;b;a;a;a;a "S. lakowitziana";a;?;?;?;a?;?;b "S. longipes";a;a;a;a;b;a;a/b "S. neapolitana";c;?;?;?;?;?;a "S. oblonga";a/(b);a†;a†;a/b;a;a;a "S. pachypoda";a;?;?;?;b;?;b "S. pachypoida";a;?;?;?;a;?;b "S. pectinata";a;a;a;c;b;b;b "S. prominula";a;?;?;?;?;?;a/b "S. rousseleti";c;a;a;?;?;?;a "S. squamadigitata";c;?;?;?;?;?;a "S. stylata";a;a;a;b;b;a;a/b "S. tamara";c;a;?;?;?;?;a/b "S. tavina";b/c;a/b‡;?;c;?;a;a "S. tremula";a;b;c;a;b;b;a/b "S. tremuloida";a;b;c;b;b;a;a/b "S. triophthalma";b/c;a;a;a;b;a;a/b "S. verrucosa";a;?;?;c;a;?;a/b "S. vorax";b/c;a;a;a;b;a;a/b