Key to the Tribes of Achilidae
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Hind tibia with one spine in basal half;
Vertex usually at least two-thirds width of
pronotum
Select - Tribe Plectoderini
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Hind tibia with one spine in distal half,
or with more than one spine;
Vertex usually less than two-thirds width of pronotum
Select - Tribe Achilini
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