British Insects: the Genus Phyllonorycter (Lepidoptera-Gracillariidae)
Synonym: Phyllonorycter spinolella (Duponchel).
Associated with shrubs. On Salicaceae; Salix (mainly Goat Willow?).
Larvae. The larvae mining in leaves; in the under-side. Found in July, or September to October.
Adults. Antennae shining white to the base (proximally, ringed dark grey distally). Face white. Head light fuscous. Thorax brassy brown; with a conspicuous median pale streak.
Wing-span 8–10 mm. Forewings golden ochreous; with a well defined basal streak (this straight, fairly broad, traversing about a third of the wing). The basal streak pale; straight, neither markedly long and slender nor sinuate; not dark-edged above. Forewings with well defined pale strigulae (white). Costal strigulae 4. Dorsal strigulae 3, or 4. Forewings with the first costal strigula not forming an acute angle with a dorsal one; with one transverse pale fascia (via confluence of the first pair of strigulae, which are scarcely recognisable as entities). The fascia only slightly bent. Hindwing cilia light fuscous (slightly brownish tinged).
Adults abroad May and August.
Illustrations. • 5 species on Salix in Britain. See notes for legend.
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’.