Millipedes are a group of arthropods that are characterised by having two pairs of jointed legs on most body segments they are known scientifically as the class Diplopoda, the name derived from this feature. Each double-legged segment is a result of two single segments fused together. Most millipedes have very elongated cylindrical or flattened bodies with more than 20 segments, while pill millipedes are shorter and can roll into a ball. Although the name millipede derives from the Latin for thousand feet, no species was known to have 1,000 or more until the discovery of Eumillipes persephone, which can have over 1,300 legs. There are approximately 12,000 named species classified into 16 orders and around 140 families, making Diplopoda the largest class of myriapods, an arthropod group which also includes centipedes and other multi-legged creatures.
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標準授權 | 480 x 400 px | JPG | 13 點 |
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標準授權 | 2121 x 1767 px | JPG | 18 點 |
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進階授權 | 3795 x 3161 px | JPG | 88 點 |
進階授權 | 3795 x 3161 px | JPG | 88 點 |