Caption
Chalkhill blue butterflies (Polyommatus coridon), mating on Red clover flower (Trifolium pratense) with phoretic Chalcidoid wasp (Eulophidae; Tetrastichinae) a parasitoid of butterfly eggs, riding on wings of male, chalk grassland, Wiltshire, UK, July.
Availability
Only inBelgium, Canada, France, Luxembourg, Switzerland