British Insects: the Genus Phyllonorycter (Lepidoptera-Gracillariidae)
Associated with trees. On Betulaceae; Betula spp. (despite the specific name).
Larvae. The larvae mining in leaves; in the under-side. Found in July, or September to October.
Adults. Antennae coloured (slightly golden fuscous, with darker rings). Face slightly brassy white. Head dark fuscous to black. Thorax sepia brown.
Wing-span 7–8 mm. Forewings dark sepia brown, or golden brown (with a golden sheen); not clear shining white; with a well defined basal streak (this narrow, traversing about a third of the wing). The basal streak pale; dark-edged above. Forewings with well defined pale strigulae (shining silvery white). Costal strigulae 4. Dorsal strigulae 3. 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 discrete entities). The fascia angulated. Hindwing cilia light brownish fuscous.
Adults abroad May and August.
Illustrations. • Phyllonorycter species on Birch. • P. acerifoliella (as sylvella), P. messaniella and P. ulmifoliella: Stainton (1855) Plate VI, under Lithocolletis. • Stainton (1855), Plate VI: original legend.. • Phyllonorycter ulmifoliella (specimen): photo. • P. ulmifoliella (Hübner) and 5 other species: Hübner, 1796–1819.
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’.