Predaceous diving beetles

A Acilius diving beetle Acilius G Great diving beetle Acilius sulcatus A Agabus beetle Agabus T Two-spotted diving beetle Agabus biguttatus C Common diving beetle Agabus bipustulatus N Nebulous diving beetle Agabus nebulosus B Bidessus Bidessus M Minute diving beetle Bidessus minutissimus D Diving beetle Boreonectes M Many-lined diving beetle Boreonectes multilineatus C Colymbetes Colymbetes B Brown diving beetle Colymbetes fuscus C Cybister beetle Cybister C Cybister lateralimarginalis Cybister lateralimarginalis C Cybister tripunctatus Cybister tripunctatus D Deronectes Deronectes D Deronectes latus Deronectes latus G Great diving beetle Dytiscus G Great diving beetle Dytiscus circumcinctus G Great diving beetle Dytiscus circumflexus G Great diving beetle Dytiscus dimidiatus L Lapland diving beetle Dytiscus lapponicus B Broad-bordered diving beetle Dytiscus latissimus G Great diving beetle Dytiscus marginalis D Dytiscus pisanus Dytiscus pisanus D Dytiscus semisulcatus Dytiscus semisulcatus D Diving beetle Eretes D Diving Beetle Eretes stiticus D Diving beetle Graphoderus A Ashy diving beetle Graphoderus cinereus D Diving beetle Graptodytes P Painted diving beetle Graptodytes pictus V Varied diving beetle Graptodytes varius D Diving beetle Hydaticus H Hydaticus transversalis Hydaticus transversalis H Hydroglyphus Hydroglyphus H Hydroglyphus geminus Hydroglyphus geminus D Diving beetle Hydroporus M Marsh hydroporus Hydroporus palustris S Striped diving beetle Hydroporus striola M Mosaic diving beetle Hydroporus tessellatus H Hydrovatus Hydrovatus H Hydrovatus clypealis Hydrovatus clypealis H Hydrovatus cuspidatus Hydrovatus cuspidatus H Hygrotus Hygrotus H Hygrotus inaequalis Hygrotus inaequalis H Hygrotus parallelogrammus Hygrotus parallelogrammus H Hygrotus versicolor Hygrotus versicolor H Hyphydrus beetle Hyphydrus H Hyphydrus ovatus Hyphydrus ovatus I Ilybius Ilybius I Ilybius fenestratus Ilybius fenestratus D Dark diving beetle Ilybius obscurus L Laccophilus Laccophilus L Laccophilus minutus Laccophilus minutus L Laccornis Laccornis L Laccornis oblongus Laccornis oblongus L Liopterus Liopterus B Brown diving beetle Liopterus haemorrhoidalis M Meladema Meladema