A Cossid moth about 40 mm long. Fore wings were a pale grey with a central darker area. Midway along the costa was a semicircular patch of white. A short diagonal patch of dark grey was seen along the trailing edge of the fore wings. The thorax had the inverted black "V" as in all most other cossids.
Spotted under bright lights near native trees.
One of many cossids spotted that year. According to Peter Marriott , this is near Trismelasmos donovani. My thanks to Peter M for the ID and to Cathy Powers for facilitating the identification.