Brown Oak Slender
Common NameBrown Oak Slender
Scientific NameCaloptilia alchimiella
FamilyGracillariidae
SubfamilyGracillariinae
Wingspan (mm)11.5
Primary Colorsbrown, white, black
HabitatWoodlands, forests, parks, and gardens where oak trees are present.
Geographic RangeEurope, parts of Asia
Host Plantsoak (Quercus spp.), sweet chestnut (Castanea sativa), beech (Fagus sylvatica), hazel (Corylus avellana)
Flight PeriodMay to June and August to September (bivoltine)
Flight Stylefluttering
Conservation Statusleast-concern
Lifecycle NotesLarvae are leaf miners, initially creating a blotch mine on host plant leaves, then exiting to form a cone or roll in the leaf where they continue to feed. Pupation occurs within a cocoon, often on the leaf or in leaf litter.
Identification TipsKey features include its small size, slender body, prominent head tuft, and the intricate brown, white, and black pattern on its narrow wings, particularly the distinct white costal streak. It often rests with its head raised.
Description
A small, slender moth characterized by its narrow, fringed wings intricately patterned with shades of brown, white, and black, and a distinctive tuft of scales on its head.
