Pterygostegia anops Murakami & Kawasawa, 1976

Pterygostegia anops Murakami & Kawasawa 1976: 115 –118, fig. 3. Diplopmaragna anops— Shear 1990: 38.

Pterygostegia anops— Mikhaljova 2000: 176.

Distribution. Japan (Shikoku Island: Ehimé Prefecture, the boundary between Ehimé and Kôchi prefectures).

Remarks. The species was originally described in Pterygostegia (Murakami & Kawasawa 1976), later transferred first to the genus Diplomaragna (Shear 1990), then it was returned to Pterygostegia (Mikhaljova 2000) . This species is only known from its terra typica, i.e. Ehimé Prefecture and the boundary between Ehimé and Kôchi prefectures, Japan. This cave inhabitant is the only species of the genus devoid of eyes.