Insects are the animal class with more than a million described species and representing more than half of all known living organisms. One order in this class are the beetles...展开

Insects are the animal class with more than a million described species and representing more than half of all known living organisms. One order in this class are the beetles (Coleoptera) with some 400,000 described species, of which some estimated 28,000 species are native to North America. Everybo…收起

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