Acrobasis consociella is a tough one to identify. At first glance it does remind one of Leaf-rolling Moths (Tortrixes). So I went through my books about Tortrixes a few times, but in vain... Now, even the animal itself may be confused about being a Pyralid and not a Tortricid, for the larvae live on oak in leaves which they spin together... Reaching a wingspan of some 19 to 22 mm Acrobasis consociella is a small species on the wing in July and August. From time to time a 2nd generation is produced in October. The adults fly from dusk onwards and are attracted to light. When disturbed during the day it will fall to the ground, pretending to be dead, rather than flying away. Acrobasis consociella is a fairly common species in oakwoods in England, Ireland, Wales and Southern Scotland.