Types of Terrestrial Invertebrates in Britain

Annelida (segmented worms)

Clitellata

Oligochaeta (earthworms and oligochaete worms)

Lumbricus terrestris Mating (c) John-Mason

Hirudinea (leeches)

Arthropoda

Crustacea

Malacostraca
Isopoda (woodlice)

Pill Woodlouse – Armadillium vulgare (c) Ed Phillips

Amphipoda (sand-hoppers)

Chelicerata

Arachnida

Scorpiones (scorpions)

Aranea (spiders)

Opiliones (harvestmen)

Pseudoscorpiones (pseudoscorpions)

Parasitiformes (ticks)

Acariformes (mites)

Myriapoda

Chilopoda (centipedes)

Diplopoda (millipedes)

Pauropoda (pauropods)

Symphyla (symphylans)

Insecta

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)

Hemiptera

Heteroptera (true bugs)

Homoptera (aphids, cicadas, etc.)

Coleoptera (beetles)

Strepsiptera (stylopids)

Hymenoptera

Symphyta (sawflies)

Parasitica (parasitic wasps)

Aculeata (bumblebees, bees, wasps and ants)

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)

Pentastoma (tongue-worms)

Mollusca

Gastropoda (snails and slugs)

Nematoda (round-worms)

Cephalorhyncha

Nematomorpha (horsehair worms)

Platyhelminthes (flatworms)

Turbellaria (free-living flatworms)

Monogenea (flukes)

Trematoda (flukes)

Cestoda (tapeworms)

Protozoa

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