| | Insects of Britain and Ireland: the genus Phyllonorycter (Lepidoptera-Gracillariidae) |
Associated with shrubs and herbs. On Salicaceae; Salix (S. viminalis).
Larvae. The larvae mining in leaves; in the under-side. Found in July, or September to October. The larva not constructing a definite cocoon.
Pupa. The pupal cremaster with one pair of hooked processes; cremastal processes long and thin (cf. those of P. salicicolella).
Adults. Antennae whitish towards the their tips. Face slightly brassy white. Head dark fuscous. Thorax light golden brown and white (anteriorly and laterally); somewhat shining-metallic, or not shining-metallic. Wing-span 7–9 mm. Forewings golden brown, or brassy brown; not clear shining white; with a well defined basal streak (this narrow). The basal streak pale; markedly bent (somewhat bent upwards from the middle, traversing about a third of the wing, at the bend coalescing with the first dorsal strigula); not dark-edged above (but somewhat dark-edged beneath). Forewings with well defined pale strigulae. Costal strigulae 4, or 5 (via an ill defined outer one). Dorsal strigulae 4. Forewings with the first costal strigula not forming an acute angle with a dorsal one; with one transverse pale fascia (via the first costal and the second dorsal), or without transverse pale fasciae. Forewings with conspicuous dark apical marking. Forewing apical marking comprising an elongate blackish apical spot. The forewing fringe narrowly dark-lined along the bases of the cilia. The forewing basal fringe line complete to confined to the apical region or fading dorsally (very indistinct thereafter). Hindwing cilia brassy fuscous.
Adults abroad May and August.
Illustrations. • 5 species on Salix in Britain. 1, Phyllonorycter (Lithocolletis) salicolella; 2, P. quinqueguttella; 3, P. hilarella; 4, P. salictella viminiella; 5, P. viminetorum. See notes for legend. • P. viminetorum, P. salicolella and P. salictella viminiella: Stainton (1855) Plate I, under Lithocolletis. PHYLLONORYCTER. 1, P. viminetorum: imago (1m), larva (1a), and mined leaf of Salix viminalis (1b). 2, P. salicolella: imago (2m), larva (2a), and mined leaf of Salix caprea (2b). 3, P. salictella viminiella: imago (3m), larva (3a), and mined leaf of Salix caprea (3b). • Stainton (1855), Plate I: original legend..
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Cite this publication as: ‘Watson, L., and Dallwitz, M.J. 2003 onwards. Insects of Britain and Ireland: the genus Phyllonorycter (Lepidoptera-Gracillariidae) Version: 14th April 2022. delta-intkey.com’.
