Arrhopalites diversus Mills, 1934: 93 –94, figs. 158–161.

Syn.: Pseudarrhopalites diversus Stach, 1945: 6 .

Type locality: USA, Iowa, Leon.

(Fig. 14 A –I) Pygmaeus ­group s. str. Total length, 0.6–0.7 mm. Color white with ferrugineous spots over the dorsum, eyes 1+1. Cephalic spinelike setae present. Ant. III swollen basally. Ant. IV undivided. All ungues with a filamentous inner tooth, first and second unguiculi with corner tooth, a short apical filament present in each unguiculi. Dental chaetotaxy as shown in table 3, ventral dental formula 3: 2: 1: 1. Anal valve chaetotaxy as in table 2, cuticular spines absent on anal valve.

Biogeographic zone 8 and 24a in Neotropical region.