A former taxonomic grouping of wingless insects that lack wings as a primitive characteristic rather than having lost them secondarily.
From Greek 'apteros' (wingless) plus 'genesis' or 'gignesthai' (to be born/generate), combining to mean 'wingless-born.' This is an outdated scientific classification term.
Scientists once thought wingless insects were evolutionary 'primitives,' but modern DNA shows that some lost wings through evolution—so this classification system became obsolete when genetic testing revealed the truth.
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