The genus Arrhopalites Börner, 1906 (Collembola, Appendiciphora, Arrhopalitidae) in the Neotropical Region, with description of four new cave species from Brazil Author Zeppelini, Douglas text Zootaxa 2006 1124 1 40 journal article 50757 10.5281/zenodo.171788 ef6107b2-b18b-42b2-ac42-60b992d8ae78 1175­5326 171788 Arrhopalites amarus Christiansen, 1966 : 62 –63, figs. 26, 43, 57, 73, 90, 93. Type locality: USA , Illinois, Volo. ( Fig. 16 A –K) Pygmaeus ­group s. str. Total length, 1.0 mm. Color white, eyes 1+1. Strong posterior cephalic spines present. Ant. III not swollen basally. Ant. IV divided into six subsegments. All ungues with a small inner tooth, tunica present in the second and third ungues. All unguiculi with corner tooth, apical filament exceeding the unguis tip on first and second unguiculi. Dental chaetotaxy in table 3, ventral dental formula 3: 2: 1: 1. Anal valve chaetotaxy in table 2, cuticular spines absent on anal valve. Biogeographic zone 8 and 24a in Neotropical region.