Adult male M. alcon

Adult female M. alcon, resting on Thomas Als' head

A flower of Gentiana pneumonanthe (the marsh gentian) - The initial hostplant of M. alcon

Newly emerged fourth instar caterpillars of M. alcon

Developing fourth instar caterpillars of M. alcon in a Myrmica rubra ant nest

A pupa of M. alcon close to eclosion as an adult, still in a M. rubra nest.

Several M. alcon pupae in a M. rubra nest.

Both caterpillars and pupae of M. alcon in a M. rubra nest.

Two shots, with different lighting, of pupae of M. alcon with developing Ichneumon parasitoids inside

An adult Ichneumon parasitoid of M. alcon

Another adult Ichneumon parasitoid of M. alcon

A Formica ant worker drinking honey solution from a golf-tee - used as a bait to examine ant distributions.

Baiting equipment