Fig 2. Comparison of the means of 3 morphometrical parameters (length in circles, width in squares and length to width ratio in triangles) measured on eggs of 8 species of diphyllobothriid cestodes.

Black and white arrows indicate pairs/groups of species for which statistical difference of particular parameter was not detected, thus showing similar values for these features. Species differing in all tested parameters is marked with a square (A. pacificus) and can be easily distinguished from the remaining species.