Describes antlions, predatory insects whose larvae dig funnel-shaped sand pits to trap prey like ants, using the critical angle of repose to ensure collapse when disturbed. The larvae are voracious carnivores with large mandibles and lack an anus during their three-year larval stage. After pupation, they undergo complete metamorphosis into harmless, short-lived adults resembling dragonflies, living about a month to reproduce and lay eggs.
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