Insects of Britain and Ireland: the genera of Lepidoptera-Geometridae
Adults. Antennae of males simple; simply-ciliate. Face rough (with a slight cone of scales).
Wingspan 24–34 mm. The outer margin of the forewing slightly sigmoid-curved, or convexly curved. Forewings white or ochreous-whitish; with a clear discal mark (this black or dark); with a distinct median band (the band dark). Hindwings conspicuously patterned to plain; coloured similarly to the forewings; predominantly white, or whitish, or pale ochreous; with a clear discal mark, or without a clear discal mark; conspicuously to fairly inconspicuously transversely lined.
Vein 10 of the forewings arising independently of 9; arising out of 11 and anastomosing with 9 to form a simple areole. Hindwings exhibiting a tubular vein 5. Vein 5 of the hindwings arising from about the middle of the transverse vein, or arising from below the middle of the transverse vein (?). 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 stalked.
Posterior tibiae of males 4-spurred.
Early stages. Larvae feeding on Galium.
British representation. 5 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. E. alternata alternata (Common Carpet), E. galiata (Galium Carpet), E. rivata (Wood Carpet), E. tristata (Small Argent and Sable).
Illustrations. • 4 Epirrhoe spp., with Costaconvexa, Camptogramma, Entephria, Larentia, Anticlea, Mesoleuca, Pelurga, Lampropteryx, Cosmorhoe and Nebula: Newman 1869. • E. galiata (Galium Carpet) and E. alternata (Common Carpet), with other Larentiinae (‘Carpets’): Kirby 50.
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’.