Insects of Britain and Ireland: the genera of Lepidoptera-Geometridae
Adults. Antennae of males bipectinate; apically simple.
Wingspan 34–37 mm. The outer margin of the forewing convexly curved. Forewings ochreous-whitish, light brownish basally; with blackish lines and marks; with a clear discal mark (this black, beyond the median). Forewings of the male with a fovea. Hindwings conspicuously patterned (notably with three black marks on the inner margin); brownish-whitish; with a clear discal mark (this black); transversely lined to without transverse lines (the lines obscure grey, or not detectable).
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 lichens on Quercus and Betula.
British representation. 1 species; South-east England and Central-southern England (last found in 1872). Living adults found in June. F. arenaria (Speckled Beauty, believed extinct).
Illustrations. • 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’.