Transferred to other genera:

Oonopinus argentinus Birabén, 1955 -- see Birabenella

Oonopinus centralis Gertsch, 1941 -- see Theotima

Oonopinus floridanus Chamberlin & Ivie, 1935 -- see Noonops

Oonopinus hunus Suman, 1965 -- see Heteroonops

Oonopinus minutissimus Petrunkevitch, 1929 -- see Theotima

Oonopinus modestus Chickering, 1951 -- see Theotima

Oonopinus mollipes Hickman, 1932 -- see Hickmanolobus

Oonopinus pallidulus Chickering, 1951 -- see Oonopoides

Oonopinus pretiosus Bryant, 1942 -- see Stenoonops

In synonymy:

Oonopinus lodoiceaphilus Benoit, 1979 = Oonopinus kilikus Suman, 1965 (Saaristo, 1999: 3)