White coloured C fuscata (Dusky Fingers). ID'd on the basis of features such as the forward-pointing triangular extensions on mid-lobes, lack of yellow on lip/tip of labellum, glands on back of dorsal sepal and underneath sepals and petals. However noted a lack of prominent red transverse stripes on and underneath the labellum. Other C. fuscata nearby displayed the stripes extending further up the lobes and underneath the labellum. Just a variation perhaps in this plant? 4 pics.
This species is variable. It can be dark grey or lighter grey with black lines. It can also have light brown markings on both forewing and hindwing (see next observation). Largish moth; eight appeared at the light-trap.