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Geometridae (geometers, loopers, earth measurers, inch worms, carpet moths, waves, pugs; subclass Pterygota, order Lepidoptera) Huge family of small to medium-sized, often cryptically coloured moths, with a slender body and relatively broad wings. In the females of some species the wings are reduced. All or some abdominal ‘legs’ are absent from the larvae, except for the last pair. The larvae frequently resemble twigs and progress in a looping fashion. There are about 12 000 species. The family has a world-wide distribution.

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