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Couplet 64
64a: Apices of penultimate 2 or 3 antennomeres each completely ringed with microsetose groove (periarticular gutters) (must be viewed distally, difficult to see in very small specimens or in those with very compact antennal club); antenna with distinct to indistinct loose club; prothorax with sharp lateral margins; abdomen with 5-6 ventrites; first trochantin exposed or hidden, if hidden and antenna with 11 antennomeres, then antennomere 8 smaller than 7 or 9 (Figure 26-4)
64b: Antenna usually lacking periarticular gutters on antennal club, other characters variables, if complete periarticular gutters present, then fore trochantin hidden, antenna with 11 antennomeres, and antennomere 8 not smaller than 7 and 9
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