These damsels, the Large red damselfly (Pyrrhosoma nymphula), are permanent inhabitants of the garden. They reproduce in the pond and emerge every spring in a group of about ten individuals.
The very nicely red colored males…
… and the more metallic green-yellow females.
The damselflies lay their eggs in the pond on water plants. The larvae evolve in the pond and emerge for their final molt, crawling via the plant stems and the shore.