Key to the American pill millipede genera (order Glomerida)

1. Body length usually> 5 mm; male leg pair 17 resembling unmodified leg; male telopods without trichostele, femoral process completely sclerotized. California, N Guatemala to Mexico ............................ Glomeroides Chamberlin, 1922

- Body length usually ≤ 5 mm; male leg pair 17 with strongly reduced telopodite (Fig. 4 B); male telopods with prefemoral and femoral trichostele (Fig. 4 E), femoral process flexible, partly membranous. SE North America ........................ 2

2. Head with conspicuous Y-shaped crest and antennal grooves; lateral margin of head sharp-edged and rectangular; collum with two transverse striae; thoracic shield with large hyposchism field; anterior margin of tergites with toothed ridge; tergites laterally without striae; telopods with tibial process......................................... Onomeris Cook, 1896 [see Wesener 2010 for a redescription]

- Head without crest or grooves (Fig. 2 C); lateral margin of head well-rounded; collum with single transverse stria (Fig. 2 F); schism of thoracic shield small (Fig. 2 E); anterior margin of tergites without toothed ridge; tergites laterally with single stria (Fig. 2 A); telopods only with femoral process, lacking tibial process (Fig. 4 D).................. Nearctomeris new genus