British Insects: the Genus Phyllonorycter (Lepidoptera-Gracillariidae)
Associated with trees (said by Jacobs to prefer seedlings and saplings, but probably not confined to Q. petraea as implied by him). On Fagaceae; native (deciduous) Quercus.
Larvae. The larvae mining in leaves; in the under-side. Found in July, or September to October.
Adults. Face leaden metallic coloured. Head black. Thorax shining-metallic; silvery or leaden.
Wing-span 6–8 mm. Forewings ochreous orange, or golden brown; with a well defined basal streak (this short, traversing to a third of the wing or less). The basal streak pale; dark-edged above. Forewings with well defined pale strigulae (silvery white, set in pairs). Costal strigulae 3. Dorsal strigulae 3. Forewings without transverse pale fasciae (the first pair of strigulae not quite coalescing). Hindwing cilia fuscous.
Adults abroad May and August.
Illustrations. • The 9 species on deciduous oak.
To view illustrations with legends giving names in current use, go to the interactive key. This also offers full and partial descriptions, diagnostic descriptions, differences and similarities between taxa, lists of taxa exhibiting or lacking specified attributes, and distributions of character states within any set of taxa, as well as source references and other relevant material.
Cite this publication as: ‘Watson, L., and Dallwitz, M.J. 2003 onwards. British insects: the genus Phyllonorycter (Lepidoptera-Gracillariidae). Version: 29th December 2011. http://delta-intkey.com’.