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Males with embolus arising in 6-o’clock-position (left palpus in ventral view); tegulum with long tapering apophysis arising retrolaterally; conductor long, parallel to distal embolus tip; cymbium tip short, about one third of tegulum length or less. Female epigyne with median longitudinal slit, only in posterior half separated. Southern Europe, Mediterraneis.
Olios argelasius (Walckenaer, 1806)
Males with embolus arising in central position from tegulum (left palpus in ventral view); tegulum with several smaller apophyses in prolateral half; conductor small, transversal to embolus tip; cymbium tip as long as tegulum. Female epigyne with lateral lobes and their inner margins distinctly separated in anterior and posterior part. Eastern Mediterraneis.
Olios suavis (O. P.-Cambridge, 1876)
Males with embolus arising in 1-o’clock-position (left palpus in ventral view); tegulum with broad and prominent apophysis extending beyond prolateral cymbial margin; conductor reduced; retrotibial apophysis broad at its base, bent retrolaterally, its tip retrolaterad. Female epigyne with median slit, posterior part separated, additional anterolateral extensions with ends bent anteriorad. Georgia, Central Asia.
Olios sericeus (Kroneberg, 1875)