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Couplet 156
156a: Abdomen with 6 ventrites; hind tarsus with 5 tarsomeres; terminal maxillary palpomere (4) shorter and narrower than penultimate; shape rather characteristic (Figure 26-24B); length 0.6-2.7 mm Scydmaenidae p.408
156b: Abdomen with 4-5 ventrites; hind tarsus variable; terminal maxillary palpomere (3 or 4) as wide or wider or as long or longer than penultimate; size variable
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