Insects of Britain and Ireland: the genera of Lepidoptera-Geometridae
Pseudoboarmia; = Hypomecis Hübner.
Adults. Crepuscular and nocturnal. Antennae of males strongly bipectinate; apically simple. Face rough (with a short tuft of scales).
Wingspan 44–54 mm. The outer margin of the forewing convexly curved. Forewings whitish with brownish tinge, conspicuously transversely lined; with a clear discal mark. The discal mark conspicuously pale-centred and dark-ringed. Forewings of the male with a fovea. Hindwings conspicuously patterned; coloured like the forewings; with a clear discal mark. The discal mark conspicuously pale-centred and dark-ringed. Hindwings transversely lined (the conspicuous median and second lines dark and wavy).
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.
British representation. 1 species; South-east England, Central-southern England, South-west England, and English Midlands (not common). Living adults found June and July. S. punctinalis (Pale Oak Beauty).
Illustrations. • S. punctinalis (Pale Oak Beauty), with Aethalura, Boarmia, Bupalus, Ectropis, Ematurga, 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’.