Circular underwing orange colour caught my attention
White-throated Mountain-Gem (Lampornis castaneoventris), Costa Rica.
Female Purple-throated Mountain-Gem (Lampornis calolaemus), Batsu Garden, San Gerardo de Dota, Costa Rica.
Lateral view of this bumble bee mimic hoverfly on Water Mint (Mentha aquatica). Crymlyn Bog National Nature Reserve, Swansea, South Wales, UK.