Chris Mattison / Black-headed cardinal beetle (Pyrochroa coccinea) larva and adult, on white background. Monmouthshire, Wales, UK. Digital composite.

Chris Mattison / Black-headed cardinal beetle (Pyrochroa coccinea) larva. Monmouthshire, Wales, UK. November.

Chris Mattison / Black-headed cardinal beetle (Pyrochroa coccinea) larva on white background. Monmouthshire, Wales, UK. November.

Staffan Widstrand / Wild Wonders of China / Red beetle (Pyrochroidae) sitting on a leaf, Tongbiguan Nature Reserve, Dehong prefecture, Yunnan province, China, May.

Rod Williams / Black-headed cardinal beetle (Pyrochroa coccinea) Hutchinson's Bank,New Addington, London, England, UK. May.

Chris Mattison / Red-headed or Common cardinal beetle (Pyrochroa serraticornis) Catbrook, Monmouthshire, Wales, UK. May.

Chris Mattison / Red-headed or Common cardinal beetle (Pyrochroa serraticornis) on white background Catbrook, Monmouthshire, May.

Chris Mattison / Black-headed cardinal beetle (Pyrochroa coccinea) on white background Catbrook, Monmouthshire, May.

Chris Mattison / Black-headed cardinal beetle (Pyrochroa coccinea) Monmouthshire, Wales, UK, May.

Rod Williams / Red-headed cardinal beetle (Pyrochroa serraticornis) Hutchinson's Bank, New Addington, London, UK May

Alan Williams / Black-headed cardinal beetle (Pyrochroa coccinea) at edge of woodland, Cheshire, UK, June.

Alan Williams / Red-headed cardinal beetle (Pyrochroa serraticornis) on Green alkanet (Pentaglottis sempervirens) flower at woodland edge, Cheshire, UK, June.

MYN / Niall Benvie / Cardinal beetle (Pyrochroa coccinea) Belgium, May.

MYN / Paul van Hoof / Black-headed cardinal beetle (Pyrochroa coccinea) adult flying, The Netherlands, May. meetyourneighbours.net project

MYN / Paul van Hoof / Black-headed cardinal beetle (Pyrochroa coccinea) adult, The Netherlands, May. meetyourneighbours.net project

Chris Mattison / Common cardinal beetle (Pyrochroa serraticornis) adult. Nottingham, England, UK, May.

Rod Williams / Cardinal beetle (Pyrochroa coccinea) Hutchinson's Bank, New Addington, Croydon, South London, England, UK, June.

MYN / Krista Schlyer / Fire-colored beetle (Pedilus sp.) harvesting toxic chemical from an American oil beetle (Meloe americanus), Anacostia watershed, Washington DC, USA, April. Meetyourneighbours.net project.

MYN / Krista Schlyer / Fire-colored beetle (Pedilus sp.) harvesting toxic chemical from an American oil beetle (Meloe americanus), Anacostia watershed, Washington DC, USA, April. Meetyourneighbours.net project.

Stephen Dalton / Cardinal beetle (Pyrochros serraticornis) taking off. Sussex, England, UK, June.

Stephen Dalton / Cardinal beetle (Pyrochros serraticornis) taking off. Sussex, England, UK, June.

Nick Upton / Red-headed cardinal beetle (Pyrochroa serraticornis) on leaf. Wiltshire garden, UK, June

Ashley Cooper / Black headed cardinal beetle (Pyrochroa coccinea) resting on a Bluebell (Hyacinthoides non-scripta) flower, Ambleside, Lake District, Cumbria, UK. May.

Stephen Dalton / Cardinal beetle (Pyrochroa serraticornis) in flight, Sussex, England. May.

Nick Upton / Red-headed cardinal beetle (Pyrochroa serraticornis) resting on on a Lily (Nymphaeaceae) leaf in garden, Wiltshire, UK. May.

Paul Harcourt Davies / Red-headed cardinal beetle (Pyrochroa coccinea) resting on leaf, Tuscany, Italy. June.

Neil Challis / Red-headed cardinal beetle (Pyrochroa serraticornis) cleaning antennae and legs, Ashridge Estate, Hertfordshire, UK, May.

Alex Hyde / Red-headed Cardinal Beetle (Pyrochroa serraticornis) female. Females have serrate antennae whilst those of males are pectinate. Photographed on a white background. Peak District Natinal Park, Derbyshi...