Subfamily Masteriinae Simon, 1889

Diagnosis. The subfamily Masteriinae differs from the other subfamilies of Dipluridae in the apical linear serrula (Fig. 1A; Raven, 1991), the anterior median eyes are reduced or absent (Fig. 3A–C; Raven, 1991); and the tarsal organ lacks elevation with low and concentric keels (Fig. 1C–D). We also propose two new characters to enhance the diagnosis of the subfamily: the shape of the tarsal organ (Fig. 1C–D), and trichobothria with corrugated bases and longitudinal keels (Fig. 1E), which is not exclusive to Masteriinae; Barychelidae and Theraphosidae may have similar bases (Guadanucci, 2012).