Arrhopalites caecus (Tullberg), 1871: 146.

Syn.: Sminthurus caecus Tullberg, 1871: 146. Arrhopalites coecus Joseph, 1882 nec Tullberg, 1871. Sminthurus carniolicus Dalla Torre, 1895.

Smynthurus banitus Folsom, 1896.

Sminthurinus caecus (Tullberg), Börner, 1901. Arrhopalites caecus (Tullberg), Börner, 1906.

Type locality: North Europe, under flower pots in houses. Types unknown.

(Fig. 12 A –K) Caecus ­group. Total length, 0.8 –1.0 mm. Color white, eyes 1 + 1. Cephalic spinelike setae present. Ant. III not swollen basally. Ant. IV undivided. All ungues with inner tooth and a weak tunica, all unguiculi with corner tooth and apical filament. Dental chaetotaxy as shown in table 3, medial ve 1 strongly spinelike, ventral dental formula 3: 2: 1: 1: 1. Anal valve chaetotaxy as in table 2, 2+ 2 cuticular spines present in each side of the anal valve. Biogeographic zone 24 a in Neotropical region.