Insects of Britain and Ireland: the genera of Lepidoptera-Geometridae
Adults. Antennae of males bipectinate; bipectinate to the apex. Face rough (with a tuft of scales).
Wingspan 38–42 mm. The outer margin of the forewing slightly angulated, or convexly curved; sometimes somewhat scalloped, or smooth. Forewings deep ochreous, suffused yellow towards the middle of the termen, with purplish or purple to black first and second lines, a ferrugineous or partly black median and the subterminal whitish-purple towards the costa; without a clear discal mark. Forewings of the male without a fovea. The outer margin of the hindwings rounded to angled; somewhat scalloped. Hindwings conspicuously patterned; deep ochreous; predominantly ochreous; without a clear discal mark; transversely lined (with a straight, dark median and a bent purplish-white and black-dotted outer line).
Hindwings lacking a tubular vein 5. 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 separate.
Posterior tibiae of males 4-spurred.
Early stages. Larvae feeding on foliage of Ligustrum, Syringa, Lonicera, etc.
British representation. 1 species; South-east England, Central-southern England, South-west England, English Midlands, Northern England, Southern Scotland, Northern Scotland, and Wales. Living adults found in July. A. syringaria (Lilac Beauty).
Illustrations. • ‘Thorns’ - Angerona, Apeira, Colotois, Crocallis, Ennomos, Odontopera, Selenia: Newman. • Ennominae (‘Thorns’, etc.): Kirby 46.
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’.