Insects of Britain and Ireland: the genera of Lepidoptera-Geometridae
Adults. Relatively stout-bodied to slender-bodied. Antennae of males bipectinate; apically simple.
Wingspan 33–40 mm. The outer margin of the forewing convexly curved. Forewings light brownish or pale fuscous, with darker lines; predominantly pale fuscous, or light brown; with a clear discal mark (this black, before the median). Forewings of the male with a fovea. Hindwings conspicuously patterned; coloured like the forewings; with a clear discal mark; transversely lined (conspicuously wavy-lined, but the first absent).
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 Quercus, Betula, Prunus spinosa.
British representation. 1 species; South-east England, Central-southern England, South-west England, English Midlands, Northern England, Southern Scotland, Northern Scotland, Wales, and Ireland (but scarce in Scotland). Living adults found in July. P. rhomboidaria (Willow Beauty); plus P. secundaria (Feathered Beauty, very recent migrant/colonist on conifers), and P. ilicaria (Lydd Beauty, very recently noted migrant).
Illustrations. • Peribatodes rhomboidaria (Willow Beauty, pale and melanic forms: photos). • Alcis, Biston, Cleora, Cleorodes, Deileptenia, Fagivorina, Menophra, Ourapteryx, Peribatodes, Selidosema: Newman. • Ennominae: Kirby 48.
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’.