Science Encyclopedias: The Bug Encyclopedia

Science Encyclopedias: The Bug Encyclopedia — page 5
Bugs About All groups Centipedes are predators that eat other arthropods Some of them even have venomous bites Millipedes tend to eat plants The groups have different leg shapes Centipede feet are long and lie flat against the ground They have one pair of legs per body segment Millipede feet point downward They have two pairs of legs per body segment Scientists estimate that there are around 8,000 species of centipedes However they believe there are more than 80,000 species of millipedes Insects are the largest category of arthropods There are one million known species of insects The total number might be much higher up to 30 million Insects make up almost 90 percent of all animal life on Earth Insects include beetles butterflies ants and many more Though insects come in many shapes and sizes most of them have some basic anatomy in common They have three parts to their bodies They each have a head a thorax in the middle and an abdomen at the end They have six legs Many have antennae Luna moths and other moth species are all types of insects 6