Insects of Britain and Ireland: the genera of Lepidoptera-Geometridae
Adults. Relatively stout-bodied to slender-bodied. Antennae of males bipectinate; apically simple. Face smooth.
Wingspan 29–34 mm. The outer margin of the forewing convexly curved. Forewings white or ochreous-white, sprinkled grey, with grey or greyish-ochreous transverse lines; predominantly white, or whitish, or pale ochreous; without a clear discal mark. Forewings of the male without a fovea (but exhibiting a similar structure in the hindwing). Hindwings conspicuously patterned to plain; coloured like the forewings; without a clear discal mark; transversely lined (first or first two lines lacking, the other one or two corresponding with those of the forewings or fainter).
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 foliage of Betula, Corylus, etc.
British representation. 2 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. C. pusaria (Common White Wave), C. exanthemata (Common Wave).
Illustrations. • Aleucis, Cabera, Campaea, Gnophos, Hylaea, Lomagrapha, Theria: Newman 1869. • 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’.