Insects of Britain and Ireland: the genera of Lepidoptera-Geometridae
Adults. Antennae of males bipectinate; apically simple. Face smooth.
Wingspan 28–31 mm. The outer margin of the forewing slightly sigmoid-curved, or convexly curved. Forewings pale grey with dark striae; predominantly pale grey; without a clear discal mark; with a distinct median band to without a median band. Hindwings plain; pale grey to whitish; without a clear discal mark; transversely lined (with darker posterior lines).
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.
Thorax glabrous beneath. Posterior tibiae of males 4-spurred.
Early stages. Larvae feeding on Sorbus aucuparia (Mountain Ash).
British representation. 1 species; South-west England, English Midlands, Northern England, and Ireland. Living adults found June and July. V. cambrica (Welsh Wave).
General comments. Thorax glabrous beneath.
Illustrations. • Venusia cambrica Curtis (Welsh Wave): B. Ent. 759. • Venusia cambrica Curtis: B. Ent. 759, legend+text. • Venusia cambrica Curtis: B. Ent. 759, text cont.. • Acasis, Aplocera, Asthena, Carsia, Chesias, Discoloxia, Euchoeca, Hydrelia, Lithostege, Lobophora, Minoa, Odezia, Pterapherapteryx, Trichopteryx: Newman 1869.
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’.