70.232 Large Thorn Copyright Martin Evans
 70.232 Large Thorn Copyright Martin Evans
 70.232 Large Thorn female Copyright Martin Evans
 70.232 Large Thorn female Copyright Martin Evans
 70.232 Large Thorn larva 3mm Copyright Martin Evans
 70.232 Large Thorn larva 9mm Copyright Martin Evans
 70.232 Large Thorn larva 16mm Copyright Martin Evans
 70.232 Large Thorn larva 20mm Copyright Martin Evans
 70.232 Large Thorn larva 27mm Copyright Martin Evans
 70.232 Large Thorn larva 29mm Copyright Martin Evans
 70.232 Large Thorn larva 29mm Copyright Martin Evans
 70.232 Large Thorn larva 36mm Copyright Martin Evans
 70.232 Large Thorn larva 40mm Copyright Martin Evans
 70.232 Large Thorn larva 57mm Copyright Martin Evans
 70.232 Large Thorn male exuvia Copyright Martin Evans
 Distribution map Copyright Martin Evans
 Life stages table Copyright Martin Evans  70.232 Large Thorn Copyright Martin Evans

Geometridae

70.232 Large Thorn Ennomos autumnaria (Werneburg, 1859)

Notable B

Similar species: Although the females can be large, some smaller specimens of Large Thorn are of a similar size to the other thorns. Some moths have two obvious central bands across the forewing, but the size and pattern of large speckles should be enough to distinguish this moth from other British or Irish species.

Forewing: 21 to 28mm

Habitats: Deciduous woodland, scrub and occasionally gardens.

Habits: The moth comes to light.

Foodplant: The larva feeds on Pedunculate Oak, other oaks, elms, birches, sallows, poplars, Alder, Sycamore, Small-leaved Lime, Hawthorn, Blackthorn, plums, cherries, apples and many other deciduous trees and shrubs. It pupates in a cocoon spun under a leaf or in the leaf litter.