That's rather large for fuscodorsalis.
I've taken a closer look at these - you have two different species here. Look at the shape of the forewing at the margin, especially at the tornus (bottom outer "corner" of the wing) - note in the upper species the tornus is extended. This species is the female of a probably undescribed species of Teulisna (near to montanebula), not mentioned in my thesis (not observed up to that point) but has become quite a frequent visitor to light traps since. Your photo is of the female - males have a darker outer third of the wing, or sometimes with a reduced darker mark more like a narrow post-medial band.
The lower two photos are (I'm fairly sure) of a male Tigrioides immaculatus - rounded tornus and narrower wing.
[ Last edited by hkmoths at 2011-7-28 08:13 ]