Insects of Britain and Ireland: the genera of Lepidoptera-Geometridae
Adults. Antennae of males simple (stout); fasciculate-ciliate. Face smooth.
Wingspan 24–28 mm. The outer margin of the forewing convexly curved. Forewings white or ochreous-white, with contrasty, dark fuscous costal, terminal and sometimes median bands and/or blotches; without a clear discal mark; with a distinct median band (sometimes, the band very dark), or without a median band. Forewings of the male without a fovea. Hindwings very conspicuously patterned (usually), or plain (when the dark markings are missing); white or ochreous-white, usually with a dark fuscous marginal band and a blotch at the anal angle, sometimes also with a dark median transverse band; without a clear discal mark; without transverse lines, or transversely lined (when there is a dark median band representing a line).
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 Salix.
British representation. 1 species; South-east England, Central-southern England, South-west England, English Midlands, Northern England, Southern Scotland, Northern Scotland, Wales, and Ireland. Living adults found May to July. L. marginata (Clouded Border).
Illustrations. • British Abraxas, Ligdia, Lomaspilis and Semiothisa: Newman. • L. marginata (Clouded Border), with other Sterrhinae: Kirby 45.
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’.