Sakayori, H. (2014b). Redescription of Allochthonius (Allochthonius) opticus collected from Okayama city, West Honshu, Japan (Pseudoscorpionida, Chthoniidae). Bulletin of Ibaraki Nature Museum 17: 1–6.
| Taxon | |
|---|---|
| Allochthonius (Allochthonius) opticus (Ellingsen, 1907) (Pseudoscorpiones: Pseudotyrannochthoniidae) | 2–5, figs 1–11, Allochthonius (Allochthonius) opticus (Ellingsen) |