All insects belong to the phylum Arthropoda. But unlike other arthropods—like lobsters, spiders, or millipedes—insects have three pairs of jointed legs, segmented bodies, an exoskeleton ...

Where are all the stick insects? (7 min 34 sec) If anyone will find out, it is likely to be Merien - she did her PhD in finding out whether stick insects look like sticks to other species.