Insects of Britain and Ireland: the genera of Lepidoptera-Geometridae
Adults. Antennae of males bipectinate; apically simple. Face smooth, or rough (with appressed or shortly projecting scales).
Wingspan 38–42 mm. The outer margin of the forewing slightly sigmoid-curved, or convexly curved. Forewings brownish-ochreous to pale fuscous; predominantly ochreous, or pale fuscous, or light brown; with a clear discal mark (this dark fuscous, beyond the median), or without a clear discal mark. Forewings of the male with a fovea. Hindwings plain; coloured as the forewings; without a clear discal mark; transversely lined (lines very obscure), or without transverse lines.
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 Calluna.
British representation. 1 species (2 subspecies); South-east England, Central-southern England, South-west England, English Midlands, Northern England, Southern Scotland, Northern Scotland, Wales, and Ireland (local). Living adults found July and August. S. brunnearia (Bordered Grey).
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’.