Invertebrate species synonyms.

1. Non-vertebrate species

2. Backboneless species
3. Animal species lacking a spine
4. Non-spined species
5. Soft-bodied species
6. Worm-like species
7. Insect species
8. Arachnid species
9. Mollusk species
10. Crustacean species
11. Jellyfish species
12. Annelid species
13. Flatworm species
14. Cnidarian species
15. Echinoderm species

Invertebrates are a diverse group of animals that lack a backbone. There is a wide range of invertebrate species, each with its own unique characteristics and classifications. However, here are some general terms and synonyms commonly used to refer to different groups of invertebrates:

1. Arthropods:
- Insects
- Crustaceans
- Arachnids
- Myriapods

2. Mollusks:
- Gastropods
- Bivalves
- Cephalopods

3. Annelids:
- Earthworms
- Polychaetes
- Leeches

4. Cnidarians:
- Jellyfish
- Corals
- Sea anemones
- Hydra

5. Echinoderms:
- Starfish
- Sea urchins
- Sea cucumbers

These are just a few examples of invertebrate groups and their commonly known names. It's important to note that there are numerous species within each group, and these are just general terms used to categorize them.