In botany and zoology, lacking scutella (small shield-like structures) or having lost such structures.
From 'ex-' (without) combined with 'scutellate' (having small shields or scale-like structures, from Latin 'scutella,' diminutive of 'scutum'). The term is used in biological classification to describe morphological absence.
Biologists use 'exscutellate' to describe organisms or plant parts that are conspicuously missing structures that their relatives have—it's like labeling something 'shield-less' in the technical terminology of natural history.
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