<Tr> <Td_colspan="2"> A chorus of several Magicicada species </Td> </Tr> <Tr> <Th_colspan="2"> Scientific classification </Th> </Tr> <Tr> <Td> Kingdom: </Td> <Td> Animalia </Td> </Tr> <Tr> <Td> Clade: </Td> <Td> Euarthropoda </Td> </Tr>

As a group (taxon) insects are approximately how old