Insects of Britain and Ireland: the genera of Lepidoptera-Geometridae

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L. Watson and M. J. Dallwitz

Carsia Hübner


Adults. Antennae of males simple; simply-ciliate.

Wingspan 24–30 mm. The outer margin of the forewing slightly sigmoid-curved, or convexly curved. Forewings not predominantly green, yellow, or black; brown-grey, with a ferrugineous band towards the termen; predominantly fuscous; with a clear discal mark (this grey), or without a clear discal mark; with a distinct median band (this dark, with a once-interrupted pale band within it). Hindwings plain; pale grey, rosy-tinged; without a clear discal mark; faintly transversely lined to 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 Vaccinium.

British representation. 1 species; English Midlands, Northern England, Southern Scotland, Northern Scotland, and Wales (common). Living adults found in July. C. sororiata (Manchester Treble-bar).

Subfamily. Larentiinae.

Illustrations. • C. sororiata anglica (Manchester Treble-bar), with Acasis, Aplocera, Asthena, Chesias, Discoloxia, Euchoeca, Hydrelia, Lithostege, Lobophora, Minoa, Odezia, Pterapherapteryx, Trichopteryx: Newman 1869. • C. sororiata, with Aplocera and other Larentiinae: Kirby 49. • Larentiinae: Carsia sororiata (Manchester Treble-bar: B. Ent. 324). • Larentiinae: Carsia sororiata: B. Ent. 324, legend+text. • Larentiinae: Carsia sororiata: B. Ent. 324, text cont..

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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.’.