Phiala fuscodorsata is a moth in the Eupterotidae family. It was described by Aurivillius in 1904. It is found in Kenya.
The wingspan is 34 mm. The wings are greyish-white, the forewings with an oblique, slightly outcurved black line from the middle of the hindmargin to the costa near the apex, broader at the hind-margin, thickened at the veins and broken into spots at the apex. There are also many black scales on the median and submedian veins between the base and the transverse line. The hindwings have a slightly curved series of black spots beyond the middle.