Insects of Britain and Ireland: the genera of Lepidoptera-Geometridae
Adults. Antennae of males strongly bipectinate; apically simple. Face rough.
Wingspan 35–40 mm. The outer margin of the forewing convexly curved. Forewings in males cream (usually), or white, without distinct transverse lines but with blackish transverse striae, veins, costa, apex and margins; in females, orange with dark ferrugineous markings and outer margin; predominantly white, or cream, or orange; without a clear discal mark. Forewings of the male with a fovea. Hindwings very conspicuously patterned (in the males), or plain (less so in the females); in males, cream or white with blackish veins, transverse lines, costal and outer margins; in females orange with darker, ferrugineous lines and margins; without a clear discal mark; transversely lined (with clear median and postmedian lines, or only the latter).
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 Pinus and Larix.
British representation. 1 species; South-east England, Central-southern England, South-west England, English Midlands, Northern England, Southern Scotland, Northern Scotland, Wales, and Ireland (common). Living adults found May to July. B. piniaria (Bordered White).
Illustrations. • Aethalura, Boarmia, Bupalus, Ectropis, Ematurga, Serraca, Tephronia: 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’.