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

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L. Watson and M. J. Dallwitz

Gnophos Treitschke

Charissa, Sciadon, Scotopteryx.

Adults. Antennae of males dentate to simple (stout, flatly sub-dentate); shortly, evenly simply-ciliate.

Wingspan 30–38 mm (G. obscuratus), or 48–54 mm (G. obfuscaria). The outer margin of the forewing convexly curved to more or less straight. Forewings grey or brown-grey, lined and sprinkled black, or fuscous and strigulated; predominantly fuscous, or grey, or pale fuscous, or pale grey, or light brown; with a clear discal mark. The discal mark conspicuously pale-centred and dark-ringed. Forewings of the male without a fovea. The outer margin of the hindwings scalloped to smooth. Hindwings conspicuously patterned, or plain; coloured like the forewings, but lacking the first line; with a clear discal mark. The discal mark conspicuously pale-centred and dark-ringed, or not dark-ringed. Hindwings transversely lined.

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 Poterium, Helianthemum, Genista, Calluna.

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 July and August. G. obscuratus (Annulet or Dark Annulet, = Charissa) Curtis, G. obfuscatus (Scotch Annulet).

Subfamily. Ennominae.

Illustrations. • Aleucis, Cabera, Campaea, Gnophos, Hylaea, Lomagrapha, Theria: Newman 1869. • Ennominae: Kirby 48. • Larentiinae: Gnophos obfuscatus (= Charissa Curtis. Scotch Annulet: B. Ent. 105). • Gnophos obfuscatus (~Charissa Curtis): B. Ent. 105, legend+text. • Gnophos obfuscatus = Charissa Curtis: B. Ent. 105, 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.’.