| | Insects of Britain and Ireland: the genera of Lepidoptera-Geometridae |
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; 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; not predominantly green, yellow, or black; 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. 1, Campaea margaritata (Light Emerald); 2, Hylaea fasciaria (Barred Red); 3, Cabera exanthemata (Common Wave); 4a-f, Cabera pusaria (Common White Wave); 5, Lomographa bimaculata (White-pinion Spotted); 6, Lomographa temerata (Clouded Silver); 7, Aleucis distinctata (Sloe Carpet); 8a-b, Theria primaria, male and vestigially-winged female); 9, Gnophos obfuscatus (Scotch Annulet); 10a-c, Gnophos (Charissa) obscuratus (The Annulet). From Newman, 1869. • Ennominae: Kirby 48. ENNOMINAE. 1, Cleora cinctaria (Ringed Carpet); 2, Peribatodes rhomboidaria (Willow Beauty); 3, Peribatodes secundaria (Feathered Beauty); 4, Deileptenia ribeata (Satin Carpet); 5, Alcis repandata (Mottled Beauty); 6, Boarmia roboraria (Great Oak Beauty); 7, Serraca punctinalis (Pale Oak Beauty); 8, Fagivorina arenaria (Speckled Beauty); 9, Cleorodes lichenaria (Brussels Lace); 10, Ectropis crepuscularia (Small Engrailed); 11, Ectropis (Paradarisa) consonaria (Square-spot); 12, Ectropis similaria (Brindled White-spot); 13, Aethalura punctulata (Grey Birch Moth); 14, Gnophos furvata; 15, Gnophos obscuratus (Dark Annulet); 16, cf. Charissa (Rhopalognophos) glaucinaria; 17, Gnophos (Charissa) obscuratus (Annulet); 18, Gnophos obfuscatus (Scotch Annulet); 19, Psodos quadrifaria; 20, Macaria fusca; 21, "Fidonia fasciolaria", = Isturgia?; 22, Istugia famula; 23, Isturgia roraria; 24, "Fidonia plumistraria", = ?; 25, Ematurga atomaria (Common Heath); 26, Bupalus piniaria (Bordered White); 27, Selidosema brunnearia (Bordered Grey); 28, Itame vincularia; 29, Semiothisa (Macaria) wauaria (V-Moth); 30, Semiothisa (Itame) brunneata (Rannoch Looper); 31, Macaria artesiaria; 32, Petrophora chlorosata (Brown Silver Line); 33, Semiothisa (Macaria) clathrata (Latticed Heath). From Kirby 48, with updated names. • Larentiinae: Gnophos obfuscatus (= Charissa Curtis. Scotch Annulet: B. Ent. 105). • Gnophos obfuscatus (~Charissa Curtis): B. Ent. 105, legend+text. This contains the original description of Charissa Curtis, long submerged in Gnophos but recently resurrected. The specific name operaria Curtis is now treated as a synonym of C. obfuscatus Denis & Schiff. • Gnophos obfuscatus = Charissa Curtis: B. Ent. 105, text cont..
We advise against extracting comparative information from the descriptions. This is much more easily achieved using the DELTA data files or the interactive key, which allows access to the character list, illustrations, 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. See also Guidelines for using data taken from Web publications.
Cite this publication as: ‘Watson, L., and Dallwitz, M.J. 2003 onwards. Insects of Britain and Ireland: the genera of Lepidoptera-Geometridae. Version: 14th February 2021. delta-intkey.com’.
