Nick Upton / Bloody-nosed beetles (Timarcha tenebricosa) mating on a grass stem in a chalk grassland meadow, Wiltshire, UK, April.

Mark Moffett / Golden Tortoise Beetle (Metriona bicolor), Sinharaja Biosphere Reserve, Sri Lanka

Mark Moffett / Golden Tortoise Beetle (Metriona bicolor), Sinharaja Biosphere Reserve, Sri Lanka

Nick Upton / Bloody-nosed beetle (Timarcha tenebricosa) in a stand of its food plant Goose grass / Cleavers (Galium aparine) in a chalk grassland meadow, Wiltshire, UK, May.

Joao Burini / Tortoise beetles (Cassidinae sp) larvae feeding on fungus, Intervales State Park, Sao Paulo, Atlantic Forest South-East Reserves, UNESCO World Heritage Site, Brazil.

Joao Burini / Top view of a Metallic tortoise beetle (Cassidinae, probably Cyrtonota in Piedade, Sao Paulo, Brazil. South-east Atlantic forest.

Joao Burini / Tortoise beetle (Coptocycla ruficornis) Sao Luis do Paraitinga, Sao Paulo, Atlantic Forest South-East Reserves UNESCO World Heritage Site, Brazil

Doug Wechsler / Thistle tortoise beetle (Cassida rubiginosa) which carries its droppings as camouflage, Crossways Preserve, Montgomery County, Pennsylvania, USA, June.

Doug Wechsler / Thistle tortoise beetle (Cassida rubiginosa) which carries its droppings as camouflage, Crossways Preserve, Montgomery County, Pennsylvania, USA, June.

Doug Wechsler / Thistle tortoise beetle (Cassida rubiginosa) which carries its droppings as camouflage, Crossways Preserve, Montgomery County, Pennsylvania, USA, June.

Paul Bertner / Tortoise Beetle (Acromis sparsa), Hitoy Cerere Biological Reserve, Costa Rica

Rod Williams / Tortoise Beetle (Cassida rubiginosa) Warwick Gardens, Peckham, London, UK, June.