Olive Crescent Trisateles emortualis

The Olive Crescent (Trisateles emortualis) is a rare and local moth of ancient and semi-ancient oak woodland, its larvae feeding on withered oak leaves on the woodland floor, making it highly dependent on the presence of substantial lying deadwood and undisturbed leaf litter. It is a species of southern and eastern England, with a restricted and declining distribution. In Suffolk, it is associated with the county’s ancient broadleaved woodlands – particularly those on boulder clay in the south and west – where continuity of old-growth woodland structure and abundant deadwood provide suitable conditions. Flying in June and July, it is primarily recorded at light traps within or adjacent to suitable woodland. Image: © Ilia Ustyantsev, Flickr.

Find out more: iNaturalist, UK Moths, Suffolk Moths