Insects of Britain and Ireland: the genera of Lepidoptera-Geometridae
Adults. Antennae of males simple; simply-ciliate. Face smooth.
Wingspan 20–22 mm. The outer margin of the forewing convexly curved. Forewings whitish, whitish grey or very pale fuscous, with rather numerous darker striae; with a clear discal mark (this grey). Hindwings plain; coloured like the forewings; without a clear discal mark; transversely lined to without transverse lines (no striae towards the base, the others obscure or lacking).
Vein 10 of the forewings arising independently of 9; arising independently, anastomosing with 11 and 9 to form a double areole. Hindwings exhibiting a tubular vein 5. Vein 5 of the hindwings arising from about the middle of the transverse vein, or arising from below the middle of the transverse vein (?). Vein 8 of the hindwings approximated to or anastomosed with the upper margin of the cell to the middle or beyond. Hindwing veins 6 and 7 stalked.
Posterior tibiae of males 4-spurred.
Early stages. Larvae feeding on foliage of Corylus.
British representation. 1 species; South-east England, Central-southern England, South-west England, English Midlands, Northern England, Southern Scotland, Northern Scotland, Wales, and Ireland. Living adults found May and June. A. albulata (Small White Wave).
Illustrations. • A. albulata (Small White Wave), with Acasis, Aplocera, Carsia, Chesias, Discoloxia, Euchoeca, Hydrelia, Lithostege Lobophora, Minoa, Odezia, Pterapherapteryx, Trichopteryx: Newman 1869. • A. albulata, with other Larentiinae (‘Carpets’, ‘Pugs’, etc.): Kirby 51.
To view the illustrations with detailed captions, 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.
Cite this publication as: ‘Watson, L., and Dallwitz, M.J. 2003 onwards. Insects of Britain and Ireland: the genera of Lepidoptera-Geometridae. Version: 8th June 2016. delta-intkey.com’.