the.com/hemiptera

True bugs: the only insects legally allowed to call themselves bugs.

means An order of insects — including cicadas, aphids, and stink bugs — defined by piercing-sucking mouthparts and (in most) forewings that are hardened at the base and membranous at the tip.

from From Greek hemi- 'half' plus pteron 'wing' — coined to describe the forewing of many true bugs, which is tough and leathery at the base but thin and see-through at the tip, as if the insect only committed to half a proper wing.

mouthparts
piercing straw fused into a built-in syringe
wings
half-hard half-membrane, hence the name half-wing
includes
cicadas, aphids, bedbugs, stink bugs, all relatives
feeding
many suck plant sap, some suck blood instead
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