<i>Agabus bipustulatus</i> classification of secondary elytral reticulation after the total sample was screened for common patterns.

Abstract

<p>Seven categories (A-G) ranging from tightly packed longitudinally elongated meshes to more or less isomorphic meshes were recognised in <i>Agabus bipustulatus</i>. Type A is found in the <i>bipustulatus</i> and <i>solieri</i> forms, type B in <i>kiesenwetterii</i>, <i>falcozi</i> and <i>dolomitanus</i>, and type C, F and G in <i>pyrenaeus</i>. The categories D, E and F describe intermixed patterns.</p