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Types of Terrestrial Invertebrates in Britain

Information about invertebrates, including how many there are in Britain, what is an invertebrate and what different types or species of invertebrates exist.

How to find your way around: below is a long list of types of terrestrial (ie living on land) invertebrates in Britain. The names are given both in Latin and in English. We have created fact sheets for many of the most popular species - including bumblebees, beetles, grasshoppers and dragonflies - to access these either click on the name below or use the left hand navigation bar.

Types of Terrestrial Invertebrates in Britain

Italics = groups that are non-native, but established in the UK.
Bold = Phylum (and subphylum)
Normal font = Class
Indented font = Order
Double indent = Sub order


Protozoa

Platyhelminthes (flatworms)

Turbellaria (free-living flatworms)
Monogenea (flukes)
Trematoda (flukes)
Cestoda (tapeworms)

Nematoda (round-worms)

Cephalorhyncha
Nematomorpha (horsehair worms)

Annelida (segmented worms)
Clitellata

  • Oligochaeta (earthworms and oligochaete worms)
  • Hirudinea (leeches)

Mollusca
Gastropoda (snails and slugs)

Arthropoda
Crustacea

  • Malacostraca
  • Isopoda (woodlice)
  • Amphipoda (sand-hoppers)

Chelicerata
Arachnida

    • Scorpiones (scorpions)
    • Aranea (spiders)
    • Opiliones (harvestmen)
    • Pseudoscorpiones (pseudoscorpions)
    • Parasitiformes (ticks)
    • Acariformes (mites)

Myriapoda

  • Chilopoda (centipedes)
  • Diplopoda (millipedes)
  • Symphyla (symphylans)
  • Pauropoda (pauropods)

    • Heteroptera (true bugs)
    • Homoptera (aphids, cicadas, etc.)

Coleoptera (beetles)

Pentastoma (tongue-worms)