1. Bugs Count by the Natural History Museum Invertebrate Picture Quiz © OPAL 2011. All rights reserved. Photos by Harry Taylor unless stated otherwise

2. Each slide shows examples of a different group of terrestrial invertebrate Look carefully at the images on each slide and try to identify the group of invertebrates they belong to Click on each slide to reveal the answer, along with key identification features (images are not to scale)

3. 1. Snails (no legs) Hard, coiled shell Soft, slimy body 1.

4. Photo credit: Roy Anderson 2. Slugs (no legs) Soft, slimy body, without a coiled shell 2.

5. 3. Earthworms (no legs)3. Long, thin body divided into many segments (‘rings’) Thickened band (saddle) in adults

6. 4. Beetles (6 legs) Biting mouthparts Hard wing-cases, meeting in a T-shape 4.

7. 5. True bugs (6 legs) Very variable group - includes the tiny aphids Wing-cases, usually meet in an X- or Y-shape 5. Piercing/sucking mouthparts (held underneath head)

8. 6. True flies (6 legs) Antennae often very short One pair of wings 6.

9. 7. Bees, wasps & ants (6 legs) Long antennae 7. Bees (hairy) Wasp (not hairy) Ant Two pairs of wings, but this is hard to see!

10. 8. Butterflies & moths (6 legs) Long antennae Two pairs of wings (almost always coloured) 8.

11. 9. Grasshoppers & crickets (6 legs) Cricket - very long antennae Long back legs for jumping 9. Grasshopper - short antennae

12. 10. Earwigs (6 legs) Long, narrow brown body Pincer-shaped claspers (‘cerci’) 10.

13. 11. Spiders (8 legs) Body clearly divided into two parts 11.

14. 12. Harvestmen (8 legs) Long, thin legs One obvious body part 12.

15. 13. Woodlice (>8 legs) Oval shaped body, divided into many segments 13. 7 pairs of legs

16. 14. Centipedes (>8 legs) 14. One pair of legs per body segment Usually orange or yellow Long, thin body, many segments

17. 15. Millipedes (>8 legs) Two pairs of legs per body segment Body divided into many segments

18. 16. Insect larvae (young)

19. Bugs Count Invertebrate Picture Quiz - answers Slide numberInvertebrate group 1Snails (Molluscs: Gastropoda) 2Slugs (Molluscs: Gastropoda) 3Earthworms (Annelida) 4Beetles (Insects: Coleoptera) 5True bugs (Insects: Hemiptera) 6True flies (Insects: Diptera) 7Bees, wasps and ants (Insects: Hymenoptera) 8Butterflies and moths (Insects: Lepidoptera) 9Crickets & grasshoppers (Insects: Orthoptera) 10Earwigs (Insects: Dermaptera) 11Spiders (Arachnids: Araneae) 12Harvestmen (Arachnids: Opiliones) 13Woodlice (Crustaceans: Isopoda) 14Centipedes (Chilopoda) 15Millipedes (Diplopoda) 16Insect larvae (various insect groups)