Insects of Britain and Ireland: the genera of Lepidoptera-Geometridae
Dysstroma, Euthalia, Polyphasia.
Adults. Crepuscular and nocturnal. Antennae of males simple. Face rough.
The outer margin of the forewing slightly sigmoid-curved, or convexly curved. Forewings predominantly green when fresh; green, light or dark fuscous, brown or ochreous; with a clear discal mark (this dark); with a distinct median band (the band sometimes darkly conspicuous, sometimes light-and-dark), or without a median band. Hindwings plain; whitish, brownish-grey, light greenish-grey, or light grey; with a clear discal mark to without a clear discal mark; transversely lined (sometimes with a faint, pale postmedian line, sometimes with two or three fairly conspicuous dark lines), or without transverse lines.
Vein 10 of the forewings arising independently of 9; arising independently, anastomosing with 11 and 9 to form a double 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 Salix, Quercus, Betula, Crataegus, also Fragaria.
British representation. 5 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 and June, or June to September, or September to December (and hibernating), or January to May (when hibernating). C. citrata (Dark Marbled Carpet), C. concinnata (Arran Carpet), C. miata (Autumn Green Carpet), C. siterata (Red-green Carpet), C. truncata (Common Marbled Carpet).
Illustrations. • 4 Chloroclysta species, with , Cidaria, Eulithis, Plemyria, Thera: Newman (1869). • C. siterata and C. truncata, 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’.