Types of Symbiotic Invertebrates in Britain
This is a list of all those groups that contain species that are directly reliant on another animal for their survival. In most cases these species are parasitic on other invertebrates or vertebrates.
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)
Monogenea (flukes)
Trematoda (flukes)
Cestoda (tapeworms)
Mesozoa
Rhombozoa (rhombozoans)
Orthonecta (orthonectidans)
Gastrotricha (gastrotrichans)
Nematoda (round-worms)
Cephalorhyncha
Nematomorpha (horsehair worms)
Rotifera (wheel animalcules)
Bdelloidea
Seisonidea
Cycliophora
Annelida (segmented worms)
Clitellata (leeches)
Arthropoda
Crustacea
Copepoda (copepods)
Chelicerata
Arachnida
Parasitiformes (ticks)
Insecta
Mallophaga (biting lice)
Anoplura (sucking lice)
Strepsiptera (stylopids)
Hymenoptera
Parasitica (parasitic wasps)
Diptera (true flies)
Nematocera (mosquitoes, etc.)
Brachycera (ked flies, tachinid flies, etc.)
Siphonaptera (fleas)
Pentastoma (tongue-worms)
Italics = introduced taxa only
