Photo © Mike Wall

Black Arches

Lymantria monacha

Checklist Number
72.010 [B&F: 2033]

Verification
Record will be accepted (subject to date and location checks)

Classification

Family:Erebidae
Subfamily:Lymantriinae
Genus:Lymantria
Species:monacha
Authority:(Linnaeus, 1758)

Local in woodland, especially of oak throughout southern England and Wales, north to Cheshire; common and widespread in Hampshire and the Isle of Wight. Wingspan male 44-47 mm, female 48-54 mm. Normally unmistakable, but the infrequent f. eremita is entirely sooty grey with cross-lines obscured, and could be mistaken for male Gypsy Moth L. dispar. Larva feeds on Pedunculate and Sessile Oak, causing sufficient damage to be a serious pest in some areas, and over-wintering as an egg.