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

Chris Mattison / Fleabane Tortoise Beetle, (Cassida murraea), North Monmouthshire, Wales.

Chris Mattison / Fleabane Tortoise Beetle, (Cassida murraea), North Monmouthshire, Wales.

Alex Hyde / Thistle tortoise Beetle (Cassida rubiginosa) photographed on a white background. Peak District National Park, Derbyshire, UK. May. Focus stacked image.

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.

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.

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

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

Rod Williams / Tortoise beetle (Cassida vibex) Sutcliffe Park, Eltham, London, UK. June.

Andy Sands / Bloody-nosed beetle (Timarcha tenebricosa) larva on grass stem, Bedfordshire, England, UK, June

Will Watson / Bloody-nosed beetle (Timarcha tenebricosa), on rock, Pembrokeshire, Wales, UK, July.

Will Watson / Bloody-nosed beetle (Timarcha tenebricosa), on rock, Pembrokeshire, Wales, UK, July.

Alex Hyde / Bloody-nosed Beetle (Timarcha tenebricosa) on white background in a mobile field studio. Devon, UK. June.

John Abbott / Leaf Beetle (Stolas sp.) Cayo District, Belize.

Chris Mattison / Tortoise beetle (Chrysomelidae) Danum Valley, Sabah, Borneo

Ingo Arndt / Tortoise / Target beetle (Ischnocodia annulus) on leaf, Costa Rica.

Nick Upton / Thistle tortoise beetle (Cassida rubiginosa) well camouflaged on Woolly thistle (Cirsium eriophorum) leaves, Wiltshire, UK, June.

Nick Upton / Bloody-nosed beetle (Timarcha tenebricosa) walking over ground in a chalk grassland meadow, Wiltshire, UK, April

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

Nick Upton / Bloody-nosed beetle (Timarcha tenebricosa) climbing on grass blades in a chalk grassland meadow, Wiltshire, UK, April.

MYN / Andrew Snyder / Tortoise beetle (Cassidinae) Iwokrama, Guyana. Meetyourneighbours.net project

MYN / Andrew Snyder / Tortoise beetle (Cassidinae) Iwokrama, Guyana. Meetyourneighbours.net project

Simon Colmer / Transparent Tortoise Beetle (Charidotella) Budongo Forest Reserve, Uganda.

Robert Pickett / Tortoise Beetle (Chrysomelidae) Hacienda Baru, Costa Rica

Jurgen Freund / Golden tortoise beetles (Charidotella sexpunctata) Tanjung Puting National Park, Borneo, Central Kalimantan, Indonesia

MYN / Paul Marcellini / Geiger Tortoise Beetle (Eurypepla calochroma floridensis), Miami, Florida. meetyourneighbours.net project

MYN / John Tiddy / Tortoise Beetle (Chrysomelidae) taking off Victoria, Australia, November. meetyourneighbours.net project

MYN / John Tiddy / Tortoise Beetle (Chrysomelidae), Victoria, Australia. meetyourneighbours.net project

MYN / John Tiddy / Tortoise Beetle (Chrysomelidae), Victoria, Australia, January. meetyourneighbours.net project

MYN / Niall Benvie / Tortoise beetle (Cassida sp) Arnos Vale Cemetery, Bristol, UK May 2012 BioBlitz, meetyourneighbours.net project

Niall Benvie / Composite of insects, arachnids and plants found on the Arnos Vale BioBlitz, Bristol, UK, June 2012 meetyourneighbours.net project. Orange ladybird (Halyzia sedecimguttata), Ivy (Hedera helix), Green...

MYN / Seth Patterson / Anacua tortoise beetle (Coptocycla texana) Sabal Palm Sanctuary, Lower Rio Grande Valley, Texas, USA, September. meetyourneighbours.net project

Simon Colmer / Tortoise beetle (Cassida vibex) on leaf, Sussex, UK

Doug Wechsler / Tortoise beetle (Chrysomelidae) West Kalimantan, Borneo, Indonesia

Pete Oxford / Tortoise beetle (Stolas sp) Amazonia, Ecuador

Nick Upton / Tortoise beetles (Acromis sparsa) Panama

Nick Upton / Female Tortoise beetle guards eggs (Acromis sparsa) Panama

PREMAPHOTOS / Tortoise beetle larva {Cassida rubiginosa} on thistle leaf. UK

PREMAPHOTOS / Tortoise beetle {Cassida murraea} on its food plant, Fleabane {Pulicaria dysenterica} UK

PREMAPHOTOS / Tortoise beetle {Cassida rubiginosa} UK

PREMAPHOTOS / Tortoise beetle female guarding her eggs {Acromis sparsa} Brazil tropical rainforest

PREMAPHOTOS / Tortoise beetle female guarding her newly hatched larvae {Acromis sparsa} Brazil tropical rainforest