Guy Edwardes / Marbled white (Melanagria galathea), two butterflies on Pyramidal orchid (Anacamptis pyramidalis). Badbury Rings, Wimborne Minster, Dorset, England, UK. June.

Nick Upton / Male Thick-legged flower beetle (Oedemera nobilis), with a Pyramidal orchid (Anacamptis pyramidalis) pollinium attached to its head, nectaring on Common hogweed flowers (Heracleum sphondylium), Wiltsh...

Edwin Giesbers / Umbilicate woodcock orchid (Ophrys umbilicata) flowers. Cyprus. April.

Paul Hobson / Violet sabrewing hummingbird (Campylopterus hemileucurus) nectaring on Orchid. Costa Rica.

Ross Hoddinott / Marsh fritillaries (Euphydryas aurinia) resting on spotted heath orchid (Dactylorhiza maculata), Dunsdon, near Holsworthy, Devon, UK. June 2016.

Ross Hoddinott / Early-purple orchids (Orchis mascula), Broxwater, Cornwall, UK. April 2017.

Ross Hoddinott / Common spotted orchids (Dactylorhiza fuchsii), backlit, Volehouse nature reserve, Devon, UK, June 2017.

Lorraine Bennery / Knapweed fritillary butterflies (Melitaea phoebe) on Green winged orchid (Anacamptis morio), Grands Causses Regional Natural Park, France, May.

Neil Aldridge / Two Lady's slipper orchids (Cypripedium calceolus) in flower in spring in woodland near Kuressaare, Saaremaa, Estonia.

Alex Hyde / Fragrant Orchid (Gymnadenia conopsea) and Yellow Rattle (Rhinanthus sp.) flowering in ancient alpine hay meadow. Nordtirol, Austrian Alps. June.

Andres M. Dominguez / Mirror orchid (Ophrys speculum) in the Sierra de Grazalema Natural Park, El Bosque, southern Spain, April.

Andres M. Dominguez / Orchid (Ophrys atlantica) Sierra de Grazalema Natural Park, Benaocaz, southern Spain, May.