11 June Dytiscidae / Predaceous diving beetles Photo | Agabus bipustulatus Agabus sturmii Ilybius ater Ilybius fuliginosus Ilybius montanus Ilybius quadriguttatus Colymbetes fuscus Rhantus exsoletus Rhantus frontalis Rhantus suturalis Liopterus haemorrhoidalis Acilius sulcatus ♂ Acilius sulcatus ♀ Graphoderus cinereus Cybister lateralimarginalis Dytiscus marginalis Eretes sticticus Hydaticus seminiger Hydroporus pubescens Laccophilus poecilus