A taxonomic class or grouping of aquatic organisms that possess breathing organs or spiracles at both ends of their bodies.
From 'amphipneust' + Latin '-a' (plural/group suffix). Formed in early 20th-century entomological taxonomy to classify insects with bilateral respiratory systems.
The Amphipneusta group includes some of nature's strangest breathers—water-dwelling insect larvae that can switch between anterior and posterior breathing depending on water conditions, a respiratory flexibility that's genuinely remarkable.
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