Jan Hamrsky:
Diving beetle (Graphoderus cinereus)
Jan Hamrsky:
Diving beetle (Graphoderus cinereus) female
Jan Hamrsky:
Diving beetles (Graphoderus cinereus), female (left) and male (right)
Jan Hamrsky:
Diving beetles (Graphoderus cinereus)
Jan Hamrsky:
Diving beetles (Graphoderus cinereus), female (right) and male (left)
Jan Hamrsky:
Diving beetle (Graphoderus cinereus) male, refilling its air supply by the surface
Jan Hamrsky:
Diving beetle (Graphoderus cinereus) female, cleaning its antennae
Jan Hamrsky:
Diving beetle (Graphoderus cinereus) male
Jan Hamrsky:
Diving beetle (Graphoderus cinereus), hind oar-like leg detail
Jan Hamrsky:
Diving beetle (Rhantus suturalis)
Jan Hamrsky:
Diving beetle (Platambus maculatus)
Jan Hamrsky:
Diving beetle (Hydroporus palustris)
Jan Hamrsky:
Diving beetle larva (Dytiscidae, Hyphydrus ovatus)
Jan Hamrsky:
Diving beetle larva (Hyphydrus ovatus)
Jan Hamrsky:
Diving beetle larvae (Dytiscidae, Hyphydrus ovatus)
Jan Hamrsky:
Diving beetle and its larva (Hyphydrus ovatus)
Jan Hamrsky:
Diving beetle (Hyphydrus ovatus)
Jan Hamrsky:
Diving beetle (Colymbetes fuscus)
Jan Hamrsky:
Diving beetle (Colymbetes fuscus)
Jan Hamrsky:
Diving beetle (Colymbetes fuscus)
Jan Hamrsky:
Diving beetle larva (Graphoderus sp.) breathing by the surface
Jan Hamrsky:
Diving beetle larva (Graphoderus sp.)
Jan Hamrsky:
Diving beetle larva (Graphoderus sp.)
Jan Hamrsky:
Diving beetle larva (Graphoderus sp.)
Jan Hamrsky:
Diving beetle larva (Graphoderus sp.)
Jan Hamrsky:
Diving beetle larva (Graphoderus sp.) breathing atmospheric oxygen by the water surface.
Jan Hamrsky:
Diving beetle larva (Graphoderus sp.)
Jan Hamrsky:
Diving beetle larva (Graphoderus sp.)
Jan Hamrsky:
Lesser diving beetle larva (Acilius sp.), feeding on damselfly caudal gill
Jan Hamrsky:
Lesser diving beetle larva (Acilius sp.)
