Nick Upton / Flesh fly (Sarcophaga sp) with pollen dusted thorax, feeding on Ivy flowers (Hedera helix) with extended proboscis sponging up nectar with disc like labellum, Wiltshire garden, UK, September

Nick Upton / Muscid fly (Graphomya maculata) female feeding on Ivy flowers (Hedera helix) with extended proboscis sponging up nectar with disc like labellum. Wiltshire garden, UK, October

Nick Upton / Bluebottle fly (Calliphora vicina) feeding on Ivy flowers (Hedera helix) with extended proboscis, sponging up nectar with disc-like labellum. Wiltshire garden, UK, September

Thomas Marent / Moon Orchid (Phalaenopsis amabilis) flower showing colorful column and labellum, Tenom, Sabah, Borneo, Malaysia

Philippe Clement / Close-up of labellum of Lizard Orchid {Himantoglossum hircinum} La Brenne, France.

Roberto Rinaldi / Emperor shrimp (Periclimenes imperator / Zenopontonia rex) hiding among the feathery gills of a spanish dancer nudibranch / sea slug (Hexabranchus sanguineus), La Runion, Indian Ocean

Nature Production / Giant african / Emperor Scorpion {Pandinus imperator} carrying babies on its back

SINCLAIR STAMMERS / Emperor dragonfly (Anax imperator) UK

Juergen Freund / Emperor shrimp {Periclimenes imperator / Zenopontonia rex} on Sea cucumber, Indo pacific

David Hall / Emperor shrimp {Periclimenes imperator / Zenopontonia rex} on Spanish dancer nudibranch, Indo pacific

Birgitte Wilms / Emperor Shrimp (Periclimenes imperator / Zenopontonia rex) on Spanish Dancer (Hexabranchus sanguineus) nudibranch, Red Sea, Egypt

Norbert Wu / Emperor Shrimp (Periclimenes imperator / Zenopontonia rex) live on surfaces of Sea Cucumber, Papua New Guinea

Juergen Freund / Emperor cleaner shrimp {Periclimenes imperator / Zenopontonia rex} on sea cucumber Sulawesi, Indonesia

Pete Oxford / Emperor tamarins grooming {Saguinus imperator} Madre de Dios Peru