Terrestrial Invertebrates

Great green bush-cricket (c) Steven Falk

Types of Terrestrial Invertebrates in Britain

Annelida (segmented worms)


Oligochaeta (earthworms and oligochaete worms)

Lumbricus terrestris Mating (c) John-Mason

Hirudinea (leeches)




Isopoda (woodlice)
Pill Woodlouse – Armadillium vulgare (c) Ed Phillips
Amphipoda (sand-hoppers)



Scorpiones (scorpions)
Aranea (spiders)

Opiliones (harvestmen)
Pseudoscorpiones (pseudoscorpions)
Parasitiformes (ticks)
Acariformes (mites)


Chilopoda (centipedes)

Diplopoda (millipedes)
Pauropoda (pauropods)
Symphyla (symphylans)


Collembola (springtails)
Diplura (diplurans)
Protura (proturans)
Thysanura (silver-fish)
Microcoryphia (bristletails)
Ephemeroptera (mayflies)
© Peter Orr
The winning image in the ‘Flies, Bees, Wasps and Dragonflies’ category shows three mayfly on crested dogstail, and was shot on the River Kennet near Kintbury, in the UK.
Odonata (dragonflies)

Plecoptera (stoneflies)

Blattaria (cockroaches)
Dermaptera (earwigs)
Orthoptera (grasshoppers and crickets)

Phasmida (stick insects)

Psocoptera (booklice)
Mallophaga (biting lice)
Anoplura (sucking lice)
Thysanoptera (thrips)
Heteroptera (true bugs)

Homoptera (aphids, cicadas, etc.)

Coleoptera (beetles)

Strepsiptera (stylopids)
Symphyta (sawflies)
Parasitica (parasitic wasps)
Aculeata (bumblebees, bees, wasps and ants)
Sea aster mining bee (c) Steven Falk


Raphidioptera (snakeflies)
Neuroptera (ant-lions, lacewings, etc.)
Chrysoperla carnea Common green lacewing
Megaloptera (alderflies)
Mecoptera (scorpionflies)
Diptera (true flies)
Flesh Fly – Sarcophaga Species (c) Ed Phillips
Nematocera (craneflies, midges, etc.)
Brachycera (hoverflies, etc.)
Siphonaptera (fleas)
Trichoptera (caddisflies)
Lepidoptera (moths and butterflies)
Peacock butterfly (c) Amy Lewis

Pentastoma (tongue-worms)



Brown lipped snail (c) Mike Dodd

Gastropoda (snails and slugs)


Nematoda (round-worms)


Nematomorpha (horsehair worms)


Platyhelminthes (flatworms)

Turbellaria (free-living flatworms)

Monogenea (flukes)

Trematoda (flukes)

Cestoda (tapeworms)




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