Previous Step (33b)
47a Median carina of pronotum cut by the posterior sulcus much in front of middle, metazona at least one and one-half times as long as prozona. go to 48
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47b Median carina of pronotum cut by the posterior sulcus near middle, metazona not much longer than prozona, never one and one-half times as long. go to 70
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