Insectes d'eau

                                                             L'Hydracarien     L'Hidrometre     La Naucore         La Velie

                                                                 ou araignée d'eau        1 cm                    1,2 cm                  1 cm

                                                                        0,3 cm                                                                 

                                                                                                 Insecte qui survolle l'étangs

                                                                                                                La Libelulle

                                                                                                                    5 à 7 cm