British Insects: the Genus Phyllonorycter (Lepidoptera-Gracillariidae)
Associated with trees. On Betulaceae; Alnus.
Larvae. The larvae mining in leaves; in the upper-side. Found in July and October.
Adults. Antennae blackish, white-tipped. Face shining white. Head black (or blackish). Thorax not shining-metallic.
Wing-span 6–7 mm. Forewings shining brownish golden ochreous, or golden orange, or brownish orange; not clear shining white; without a basal streak; with well defined pale strigulae (these shining silvery white). Costal strigulae 4, or 5. The fasciae and strigulae inwardly sharply dark-edged. Dorsal strigulae 4 (the third dorsal between the third and fourth costals). Forewings with the first costal strigula not forming an acute angle with a dorsal one; with two transverse pale fasciae (via the first two pairs of strigulae, which are indistinguishable as entities).
Adults abroad May and August.
Illustrations. • Phyllonorycter species on Alder. • P. stettinensis, P. schreberella and P. cf. rajella (as alnifolia): Stainton (1855) Plate V, under Lithocolletis. • Stainton (1855), Plate V: original legend..
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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’.