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a) unsorted sample of edaphic weevils including Trigonopterus and other genera in ethanol. b–c) sorted samples containing each “initial morphospecies” of Trigonopterus. d–e) Dry-mounted specimens of Trigonopterus after DNA extraction and the preparation of genitalia; “refined morphospecies”; examples of four characteristic edaphic species (d) and foliage-frequenting species (e).
