Hemiptera is one of the large orders within the insect class.
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Literal: 半 'half' + 翅 'wing' + 目 'order' — many Hemipterans (true bugs) have forewings that are leathery on the basal half and membranous on the distal half, hence the 'half-wing' name (matching the Greek hemi-pteron = 'half wing').